Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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    The Climate, Land, Energy, Water and Food Nexus Challenge in a Land Scarce Country: Innovations in the Netherlands
    Janssen, Davine N.G. ; Ramos, Eunice Pereira ; Linderhof, Vincent ; Polman, Nico ; Laspidou, Chrysi ; Fokkinga, Dennis ; Mesquita E Sousa, Duarte de - \ 2020
    Sustainability 12 (2020)24. - ISSN 2071-1050 - p. 10491 - 10491.
    The Netherlands has the ambitious target of transitioning to a low-carbon economy by 2050. One factor that may constrain this progress, however, is the large spatial requirements of renewable energy technologies, and resulting competition for land through interlinkages between the Climate (C), Land (L), Energy (E), Water (W) and Food (F) domains—the CLEWF nexus. This study aims at identifying innovations that can improve the performance of the nexus by addressing the land scarcity constraint while supporting the low-carbon economy transition. A framework for the identification of potential innovations applicable in the nexus context was developed and applied. It is derived from a Driver-Pressure-State-Impact-Response (DPSIR) analysis of land scarcity in the Dutch nexus and a stock-taking benchmarking analysis of European countries. An inventory of innovations was prepared based on several classifications of innovations, collecting examples from the Netherlands, Belgium, Denmark, Germany, Latvia and Sweden. Three innovations were identified as particularly promising: district heating, Energy Service Companies and peak shaving through water pumping. Furthermore, the DPSIR framework was also used to identify overarching societal elements common to countries that successfully implemented sustainable innovations. These were found to relate to long-term political commitments, geopolitical and economic drivers, and pioneering approaches building from and towards national strengths.
    Warming and eutrophication effects on the phytoplankton communities of two tropical water systems of different trophic states : An experimental approach
    Anunciação Gomes, Andreia Maria da; Marinho, Marcelo Manzi ; Berjante Mesquita, Marcella Coelho ; Prestes, Ana Carolina Coelho ; Lürling, Miquel ; Azevedo, Sandra M.F.O. - \ 2020
    Lakes & Reservoirs : Research and Management 25 (2020)3. - ISSN 1320-5331 - p. 275 - 282.
    cyanobacterial blooms - eutrophic systems - global warming - nutrients addition - oligo-mesotrophic systems

    Both global warming and eutrophication are predicted to promote cyanobacterial blooms. At the same time, how tropical phytoplankton communities exhibiting different trophic state systems will respond to temperature variations is less clear. To investigate the effects of temperature changes and nutrient additions on phytoplankton communities, and gain insights regarding possible resistance to these effects, the present study focused on testing the hypothesis that temperature variations and nutrient additions will have a stronger effect on cyanobacteria dominance in eutrophic water system than in oligo-mesotrophic water systems. Experiments were conducted with phytoplankton communities from two aquatic ecosystems exhibiting different trophic states. To this end, water samples from a eutrophic and oligo-mesotrophic system were collected and incubated at 25 and 30ºC. Samples receiving additional surplus nitrogen (N) and phosphorus (P) inputs were included to serve as eutrophication treatments. The study results indicated that temperature variations alone did not promote cyanobacteria in water from either the oligo-mesotrophic or eutrophic water system. However, nutrient enrichment of the water from the eutrophic system significantly boosted the cyanobacteria, with the biomass increasing by factor of 10 for both the 25°C and 30°C treatments. In contrast, eutrophication of the water from the oligo-mesotrophic system did not change the relative contribution of phytoplankton groups, with the response ratios being much lower than those for the water from the eutrophic system. Although based on a simple experimental design, the results of the present study suggest that cyanobacteria dominance is favoured by further nutrient additions for eutrophic water systems, independently of any direct temperature effects, and that more pristine environments possess some resistance against eutrophication effects. Since global warming is assumed to indirectly intensify eutrophication symptoms, the results of the present study underscore the importance of nutrient control.

    Circulating bilirubin levels and risk of colorectal cancer: serological and Mendelian randomization analyses
    Seyed Khoei, Nazlisadat ; Jenab, Mazda ; Murphy, Neil ; Banbury, Barbara L. ; Carreras-Torres, Robert ; Viallon, Vivian ; Kühn, Tilman ; Bueno-de-Mesquita, Bas ; Aleksandrova, Krasimira ; Cross, Amanda J. ; Weiderpass, Elisabete ; Stepien, Magdalena ; Bulmer, Andrew ; Tjønneland, Anne ; Boutron-Ruault, Marie Christine ; Severi, Gianluca ; Carbonnel, Franck ; Katzke, Verena ; Boeing, Heiner ; Bergmann, Manuela M. ; Trichopoulou, Antonia ; Karakatsani, Anna ; Martimianaki, Georgia ; Palli, Domenico ; Tagliabue, Giovanna ; Panico, Salvatore ; Tumino, Rosario ; Sacerdote, Carlotta ; Skeie, Guri ; Merino, Susana ; Bonet, Catalina ; Rodríguez-Barranco, Miguel ; Gil, Leire ; Chirlaque, Maria Dolores ; Ardanaz, Eva ; Myte, Robin ; Hultdin, Johan ; Perez-Cornago, Aurora ; Aune, Dagfinn ; Tsilidis, Konstantinos K. ; Albanes, Demetrius ; Baron, John A. ; Berndt, Sonja I. ; Bézieau, Stéphane ; Brenner, Hermann ; Campbell, Peter T. ; Casey, Graham ; Chan, Andrew T. ; Chang-Claude, Jenny ; Chanock, Stephen J. ; Cotterchio, Michelle ; Gallinger, Steven ; Gruber, Stephen B. ; Haile, Robert W. ; Hampe, Jochen ; Hoffmeister, Michael ; Hopper, John L. ; Hsu, Li ; Huyghe, Jeroen R. ; Jenkins, Mark A. ; Joshi, Amit D. ; Kampman, Ellen ; Larsson, Susanna C. ; Marchand, Loic Le; Li, Christopher I. ; Li, Li ; Lindblom, Annika ; Lindor, Noralane M. ; Martín, Vicente ; Moreno, Victor ; Newcomb, Polly A. ; Offit, Kenneth ; Ogino, Shuji ; Parfrey, Patrick S. ; Pharoah, Paul D.P. ; Rennert, Gad ; Sakoda, Lori C. ; Schafmayer, Clemens ; Schmit, Stephanie L. ; Schoen, Robert E. ; Slattery, Martha L. ; Thibodeau, Stephen N. ; Ulrich, Cornelia M. ; Duijnhoven, Franzel J.B. van; Weigl, Korbinian ; Weinstein, Stephanie J. ; White, Emily ; Wolk, Alicja ; Woods, Michael O. ; Wu, Anna H. ; Zhang, Xuehong ; Ferrari, Pietro ; Anton, Gabriele ; Peters, Annette ; Peters, Ulrike ; Gunter, Marc J. ; Wagner, Karl Heinz ; Freisling, Heinz - \ 2020
    BMC Medicine 18 (2020)1. - ISSN 1741-7015 - 1 p.
    Anti-oxidants - Bilirubin - Cancer - Colorectal cancer - Mendelian randomization analysis

    BACKGROUND: Bilirubin, a byproduct of hemoglobin breakdown and purported anti-oxidant, is thought to be cancer preventive. We conducted complementary serological and Mendelian randomization (MR) analyses to investigate whether alterations in circulating levels of bilirubin are associated with risk of colorectal cancer (CRC). We decided a priori to perform analyses separately in men and women based on suggestive evidence that associations may differ by sex. METHODS: In a case-control study nested in the European Prospective Investigation into Cancer and Nutrition (EPIC), pre-diagnostic unconjugated bilirubin (UCB, the main component of total bilirubin) concentrations were measured by high-performance liquid chromatography in plasma samples of 1386 CRC cases and their individually matched controls. Additionally, 115 single-nucleotide polymorphisms (SNPs) robustly associated (P < 5 × 10-8) with circulating total bilirubin were instrumented in a 2-sample MR to test for a potential causal effect of bilirubin on CRC risk in 52,775 CRC cases and 45,940 matched controls in the Genetics and Epidemiology of Colorectal Cancer Consortium (GECCO), the Colon Cancer Family Registry (CCFR), and the Colorectal Transdisciplinary (CORECT) study. RESULTS: The associations between circulating UCB levels and CRC risk differed by sex (Pheterogeneity = 0.008). Among men, higher levels of UCB were positively associated with CRC risk (odds ratio [OR] = 1.19, 95% confidence interval [CI] = 1.04-1.36; per 1-SD increment of log-UCB). In women, an inverse association was observed (OR = 0.86 (0.76-0.97)). In the MR analysis of the main UGT1A1 SNP (rs6431625), genetically predicted higher levels of total bilirubin were associated with a 7% increase in CRC risk in men (OR = 1.07 (1.02-1.12); P = 0.006; per 1-SD increment of total bilirubin), while there was no association in women (OR = 1.01 (0.96-1.06); P = 0.73). Raised bilirubin levels, predicted by instrumental variables excluding rs6431625, were suggestive of an inverse association with CRC in men, but not in women. These differences by sex did not reach formal statistical significance (Pheterogeneity ≥ 0.2). CONCLUSIONS: Additional insight into the relationship between circulating bilirubin and CRC is needed in order to conclude on a potential causal role of bilirubin in CRC development.

    Physical activity and risks of breast and colorectal cancer : a Mendelian randomisation analysis
    Papadimitriou, Nikos ; Dimou, Niki ; Tsilidis, Konstantinos K. ; Banbury, Barbara ; Martin, Richard M. ; Lewis, Sarah J. ; Kazmi, Nabila ; Robinson, Timothy M. ; Albanes, Demetrius ; Aleksandrova, Krasimira ; Berndt, Sonja I. ; Timothy Bishop, D. ; Brenner, Hermann ; Buchanan, Daniel D. ; Bueno-de-Mesquita, Bas ; Campbell, Peter T. ; Castellví-Bel, Sergi ; Chan, Andrew T. ; Chang-Claude, Jenny ; Ellingjord-Dale, Merete ; Figueiredo, Jane C. ; Gallinger, Steven J. ; Giles, Graham G. ; Giovannucci, Edward ; Gruber, Stephen B. ; Gsur, Andrea ; Hampe, Jochen ; Hampel, Heather ; Harlid, Sophia ; Harrison, Tabitha A. ; Hoffmeister, Michael ; Hopper, John L. ; Hsu, Li ; María Huerta, José ; Huyghe, Jeroen R. ; Jenkins, Mark A. ; Keku, Temitope O. ; Kühn, Tilman ; Vecchia, Carlo La; Marchand, Loic Le; Li, Christopher I. ; Li, Li ; Lindblom, Annika ; Lindor, Noralane M. ; Lynch, Brigid ; Markowitz, Sanford D. ; Masala, Giovanna ; May, Anne M. ; Milne, Roger ; Monninkhof, Evelyn ; Moreno, Lorena ; Moreno, Victor ; Newcomb, Polly A. ; Offit, Kenneth ; Perduca, Vittorio ; Pharoah, Paul D.P. ; Platz, Elizabeth A. ; Potter, John D. ; Rennert, Gad ; Riboli, Elio ; Sánchez, Maria Jose ; Schmit, Stephanie L. ; Schoen, Robert E. ; Severi, Gianluca ; Sieri, Sabina ; Slattery, Martha L. ; Song, Mingyang ; Tangen, Catherine M. ; Thibodeau, Stephen N. ; Travis, Ruth C. ; Trichopoulou, Antonia ; Ulrich, Cornelia M. ; Duijnhoven, Franzel J.B. van; Guelpen, Bethany Van; Vodicka, Pavel ; White, Emily ; Wolk, Alicja ; Woods, Michael O. ; Wu, Anna H. ; Peters, Ulrike ; Gunter, Marc J. ; Murphy, Neil - \ 2020
    Nature Communications 11 (2020)1. - ISSN 2041-1723

    Physical activity has been associated with lower risks of breast and colorectal cancer in epidemiological studies; however, it is unknown if these associations are causal or confounded. In two-sample Mendelian randomisation analyses, using summary genetic data from the UK Biobank and GWA consortia, we found that a one standard deviation increment in average acceleration was associated with lower risks of breast cancer (odds ratio [OR]: 0.51, 95% confidence interval [CI]: 0.27 to 0.98, P-value = 0.04) and colorectal cancer (OR: 0.66, 95% CI: 0.48 to 0.90, P-value = 0.01). We found similar magnitude inverse associations for estrogen positive (ER+ve) breast cancer and for colon cancer. Our results support a potentially causal relationship between higher physical activity levels and lower risks of breast cancer and colorectal cancer. Based on these data, the promotion of physical activity is probably an effective strategy in the primary prevention of these commonly diagnosed cancers.

    The Maastricht-FFQ: Development and Validation of a Comprehensive Food Frequency Questionnaire for The Maastricht Study
    Dongen, Martien C.J.M. van; Wijckmans-Duysens, Nicole E.G. ; Biggelaar, Louise J.C.J. den; Ock, Marga C. ; Meijboom, S. ; Brants, H.A.M. ; Vries, J.H.M. de; Feskens, E.J.M. ; Bueno-de-Mesquita, H.B. ; Geelen, M.M.E.E. ; Stehouwer, C.D.A. ; Dagnelie, Pieter C. ; Eussen, Simone J.P.M. - \ 2019
    Nutrition 62 (2019). - ISSN 0899-9007
    Objective: To develop and validate a comprehensive food frequency questionnaire (FFQ) for The Maastricht Study, a population-based prospective cohort study in Maastricht, The Netherlands. Research Methods & Procedures: Item selection for the FFQ was based on explained variation and contribution to intake of energy and 24 nutrients. For validation, the FFQ was filled out by 135 participants (25-70 years) of the Nutrition Questionnaires plus study. Per person, on average 2.8 (range 1 to 5) telephone-based 24h dietary recalls (24hRs), two 24h urinary samples and one blood sample were available. Validity of 54 nutrients and 22 food groups was assessed by ranking agreement, correlation coefficients, attenuation factors, and ultimately de-attenuated correlation coefficients (validity coefficients). Results: Median correlation coefficients for energy and macronutrients, micronutrients and food groups were 0.45, 0.36 and 0.38, respectively. Median de-attenuated correlation coefficients were 0.53 for energy and macronutrients, 0.45 for micronutrients and 0.64 for food groups, being >0.50 for 18 out of 22 macronutrients and 16 out of 30 micronutrients, and >0.50 for 17 out of 22 food groups. The FFQ underestimated protein and potassium intake compared to 24h urinary nitrogen and potassium excretion by -18% and -2%, respectively. Correlation coefficients ranged from 0.50 and 0.55 for (fatty) fish intake and plasma EPA and DHA, and from 0.26-0.42 between fruit and vegetable intake and plasma carotenoids. Conclusion: Overall, the validity of the 253-item Maastricht-FFQ is good. The comprehensiveness of this FFQ make it well-suited for use in The Maastricht Study and similar populations.
    Vitamin D-related genes, blood vitamin D levels and colorectal cancer risk in western european populations
    Fedirko, Veronika ; Mandle, Hannah B. ; Zhu, Wanzhe ; Hughes, David J. ; Siddiq, Afshan ; Ferrari, Pietro ; Romieu, Isabelle ; Riboli, Elio ; Bueno-de-Mesquita, Bas ; Duijnhoven, Fränzel J.B. Van; Siersema, Peter D. ; Tjønneland, Anne ; Olsen, Anja ; Perduca, Vittorio ; Carbonnel, Franck ; Boutron-Ruault, Marie Christine ; Kühn, Tilman ; Johnson, Theron ; Krasimira, Aleksandrova ; Trichopoulou, Antonia ; Makrythanasis, Periklis ; Thanos, Dimitris ; Panico, Salvatore ; Krogh, Vittorio ; Sacerdote, Carlotta ; Skeie, Guri ; Weiderpass, Elisabete ; Colorado-Yohar, Sandra ; Sala, Núria ; Barricarte, Aurelio ; Sanchez, Maria Jose ; Quirós, Ramón ; Amiano, Pilar ; Gylling, Björn ; Harlid, Sophia ; Perez-Cornago, Aurora ; Heath, Alicia K. ; Tsilidis, Konstantinos K. ; Aune, Dagfinn ; Freisling, Heinz ; Murphy, Neil ; Gunter, Marc J. ; Jenab, Mazda - \ 2019
    Nutrients 11 (2019)8. - ISSN 2072-6643
    Colorectal neoplasms - Incidence - Single nucleotide polymorphism (SNP) - Vitamin D

    Higher circulating 25-hydroxyvitamin D levels (25(OH)D) have been found to be associated with lower risk for colorectal cancer (CRC) in prospective studies. Whether this association is modified by genetic variation in genes related to vitamin D metabolism and action has not been well studied in humans. We investigated 1307 functional and tagging single-nucleotide polymorphisms (SNPs; individually, and by gene/pathway) in 86 vitamin D-related genes in 1420 incident CRC cases matched to controls from the European Prospective Investigation into Cancer and Nutrition (EPIC) cohort. We also evaluated the association between these SNPs and circulating 25(OH)D in a subset of controls. We confirmed previously reported CRC risk associations between SNPs in the VDR, GC, and CYP27B1 genes. We also identified additional associations with 25(OH)D, as well as CRC risk, and several potentially novel SNPs in genes related to vitamin D transport and action (LRP2, CUBN, NCOA7, and HDAC9). However, none of these SNPs were statistically significant after Benjamini-Hochberg (BH) multiple testing correction. When assessed by a priori defined functional pathways, tumor growth factor β(TGFβ) signaling was associated with CRC risk (P ≤ 0.001), with most statistically significant genes being SMAD7 (PBH = 0.008) and SMAD3 (PBH = 0.008), and 18 SNPs in the vitamin D receptor (VDR) binding sites (P = 0.036). The 25(OH)D-gene pathway analysis suggested that genetic variants in the genes related to VDR complex formation and transcriptional activity are associated with CRC depending on 25(OH)D levels (interaction P = 0.041). Additional studies in large populations and consortia, especially with measured circulating 25(OH)D, are needed to confirm our findings.

    Wet and dry tropical forests show opposite successional pathways in wood density but converge over time
    Poorter, L. ; Rozendaal, Danaë ; Bongers, F. ; Almeida-Cortez, Jarcilene S. ; Almeyda Zambrano, Angélica María ; Álvarez, Francisco S. ; Andrade, José Luís ; Villa, Luis Felipe Arreola ; Balvanera, Patricia ; Becknell, Justin M. ; Bentos, Tony V. ; Bhaskar, Radika ; Boukili, Vanessa ; Brancalion, Pedro H.S. ; Broadbent, Eben N. ; César, Ricardo Gomes ; Chave, Jerome ; Chazdon, Robin L. ; Colletta, Gabriel Dalla ; Craven, Dylan ; Jong, Ben H.J. de; Denslow, Julie S. ; Dent, Daisy H. ; DeWalt, Saara J. ; García, Elisa Díaz ; Dupuy, Juan M. ; Durán, Sandra M. ; Espírito Santo, Mário Marcos ; Fandiño, María C. ; Fernandes, Geraldo Wilson ; Finegan, Bryan ; Moser, Vanessa Granda ; Hall, Jefferson S. ; Hernández-Stefanoni, José Luis ; Jakovac, A.C. ; Junqueira, André B. ; Kennard, Deborah ; Lebrija-Trejos, Edwin ; Letcher, Susan G. ; Lohbeck, M.W.M. ; Lopez, Omar R. ; Marín-Spiotta, Erika ; Martínez-Ramos, Miguel ; Martins, Sebastião Venâncio ; Massoca, Paulo E.S. ; Meave, Jorge A. ; Mesquita, Rita ; Mora, Francisco ; Souza Moreno, Vanessa De; Müller, Sandra C. ; Muñoz, Rodrigo ; Muscarella, Robert ; Oliveira Neto, Silvio Nolasco De; Nunes, Yule Roberta Ferreira ; Ochoa-Gaona, Susana ; Paz, Horacio ; Pena Claros, M. ; Piotto, Daniel ; Ruíz, Jorge ; Sanaphre-Villanueva, Lucía ; Sanchez-Azofeifa, Arturo ; Schwartz, Naomi B. ; Steininger, Marc K. ; Thomas, William Wayt ; Toledo, Marisol ; Uriarte, Maria ; Breugel, Michiel van; Wal, Hans van der - \ 2019
    Wageningen University & Research
    secondary succession - community assembly - community-weighted mean - wood density - Neotropics - tropical forest - Latin America
    We analyse how community wood density (WD) recovers during secondary tropical forest succession. In wet forests succession proceeds from low to high WD, in dry forests from high to low WD, resulting in convergence of community WD of dry and wet forests over time, as vegetation cover builds up.
    Wet and dry tropical forests show opposite successional pathways in wood density but converge over time
    Poorter, Lourens ; Rozendaal, Danaë M.A. ; Bongers, Frans ; Almeida-Cortez, Jarcilene S. de; Almeyda Zambrano, Angélica María ; Álvarez, Francisco S. ; Andrade, José Luís ; Villa, Luis Felipe Arreola ; Balvanera, Patricia ; Becknell, Justin M. ; Bentos, Tony V. ; Bhaskar, Radika ; Boukili, Vanessa ; Brancalion, Pedro H.S. ; Broadbent, Eben N. ; César, Ricardo G. ; Chave, Jerome ; Chazdon, Robin L. ; Colletta, Gabriel Dalla ; Craven, Dylan ; Jong, Ben H.J. de; Denslow, Julie S. ; Dent, Daisy H. ; DeWalt, Saara J. ; García, Elisa Díaz ; Dupuy, Juan Manuel ; Durán, Sandra M. ; Espírito Santo, Mário M. ; Fandiño, María C. ; Fernandes, Geraldo Wilson ; Finegan, Bryan ; Moser, Vanessa Granda ; Hall, Jefferson S. ; Hernández-Stefanoni, José Luis ; Jakovac, Catarina C. ; Junqueira, André B. ; Kennard, Deborah ; Lebrija-Trejos, Edwin ; Letcher, Susan G. ; Lohbeck, Madelon ; Lopez, Omar R. ; Marín-Spiotta, Erika ; Martínez-Ramos, Miguel ; Martins, Sebastião V. ; Massoca, Paulo E.S. ; Meave, Jorge A. ; Mesquita, Rita ; Mora, Francisco ; Souza Moreno, Vanessa de; Müller, Sandra C. ; Muñoz, Rodrigo ; Muscarella, Robert ; Oliveira Neto, Silvio Nolasco de; Nunes, Yule R.F. ; Ochoa-Gaona, Susana ; Paz, Horacio ; Peña-Claros, Marielos ; Piotto, Daniel ; Ruíz, Jorge ; Sanaphre-Villanueva, Lucía ; Sanchez-Azofeifa, Arturo ; Schwartz, Naomi B. ; Steininger, Marc K. ; Thomas, William Wayt ; Toledo, Marisol ; Uriarte, Maria ; Utrera, Luis P. ; Breugel, Michiel van; Sande, Masha T. van der; Wal, Hans van der; Veloso, Maria D.M. ; Vester, Hans F.M. ; Vieira, Ima C.G. ; Villa, Pedro Manuel ; Williamson, G.B. ; Wright, S.J. ; Zanini, Kátia J. ; Zimmerman, Jess K. ; Westoby, Mark - \ 2019
    Nature Ecology & Evolution 3 (2019). - ISSN 2397-334X - p. 928 - 934.

    Tropical forests are converted at an alarming rate for agricultural use and pastureland, but also regrow naturally through secondary succession. For successful forest restoration, it is essential to understand the mechanisms of secondary succession. These mechanisms may vary across forest types, but analyses across broad spatial scales are lacking. Here, we analyse forest recovery using 1,403 plots that differ in age since agricultural abandonment from 50 sites across the Neotropics. We analyse changes in community composition using species-specific stem wood density (WD), which is a key trait for plant growth, survival and forest carbon storage. In wet forest, succession proceeds from low towards high community WD (acquisitive towards conservative trait values), in line with standard successional theory. However, in dry forest, succession proceeds from high towards low community WD (conservative towards acquisitive trait values), probably because high WD reflects drought tolerance in harsh early successional environments. Dry season intensity drives WD recovery by influencing the start and trajectory of succession, resulting in convergence of the community WD over time as vegetation cover builds up. These ecological insights can be used to improve species selection for reforestation. Reforestation species selected to establish a first protective canopy layer should, among other criteria, ideally have a similar WD to the early successional communities that dominate under the prevailing macroclimatic conditions.

    Biodiversity recovery of Neotropical secondary forests
    Rozendaal, Danaë M.A. ; Bongers, Frans ; Aide, T.M. ; Alvarez-Dávila, Esteban ; Ascarrunz, Nataly ; Balvanera, Patricia ; Becknell, Justin M. ; Bentos, Tony V. ; Brancalion, Pedro H.S. ; Cabral, George A.L. ; Calvo-Rodriguez, Sofia ; Chave, Jerome ; César, Ricardo G. ; Chazdon, Robin L. ; Condit, Richard ; Dallinga, Jorn S. ; Almeida-Cortez, Jarcilene S. De; Jong, Ben de; Oliveira, Alexandre De; Denslow, Julie S. ; Dent, Daisy H. ; Dewalt, Saara J. ; Dupuy, Juan Manuel ; Durán, Sandra M. ; Dutrieux, Loïc P. ; Espírito-Santo, Mario M. ; Fandino, María C. ; Fernandes, G.W. ; Finegan, Bryan ; García, Hernando ; Gonzalez, Noel ; Moser, Vanessa Granda ; Hall, Jefferson S. ; Hernández-Stefanoni, José Luis ; Hubbell, Stephen ; Jakovac, Catarina C. ; Hernández, Alma Johanna ; Junqueira, André B. ; Kennard, Deborah ; Larpin, Denis ; Letcher, Susan G. ; Licona, Juan-Carlos ; Lebrija-trejos, Edwin ; Marín-Spiotta, Erika ; Martínez-Ramos, Miguel ; Massoca, Paulo E.S. ; Meave, Jorge A. ; Mesquita, Rita C.G. ; Mora, Francisco ; Müller, Sandra C. ; Muñoz, Rodrigo ; Oliveira Neto, Silvio Nolasco De; Norden, Natalia ; Nunes, Yule R.F. ; Ochoa-Gaona, Susana ; Ortiz-Malavassi, Edgar ; Ostertag, Rebecca ; Peña-Caros, Marielos ; Pérez-García, Eduardo A. ; Piotto, Daniel ; Powers, Jennifer S. ; Aguilar-Cano, José ; Rodriguez-Buritica, Susana ; Rodríguez-Velázquez, Jorge ; Romero-Romero, Marco Antonio ; Ruíz, Jorge ; Sanchez-Azofeifa, Arturo ; Almeida, Arlete Silva De; Silver, Whendee L. ; Schwartz, Naomi B. ; Thomas, William Wayt ; Toledo, Marisol ; Uriarte, Maria ; Sá Sampaio, Everardo Valadares De; Breugel, Michiel van; Wal, Hans van der; Martins, Sebastião Venâncio ; Veloso, Maria D.M. ; Vester, Hans F.M. ; Vicentini, Alberto ; Vieira, Ima C.G. ; Villa, Pedro ; Williamson, G.B. ; Zanini, Kátia J. ; Zimmerman, Jess ; Poorter, Lourens - \ 2019
    Science Advances 5 (2019)3. - ISSN 2375-2548 - 10 p.
    Old-growth tropical forests harbor an immense diversity of tree species but are rapidly being cleared, while secondary forests that regrow on abandoned agricultural lands increase in extent. We assess how tree species richness and composition recover during secondary succession across gradients in environmental conditions and anthropogenic disturbance in an unprecedented multisite analysis for the Neotropics. Secondary forests recover remarkably fast in species richness but slowly in species composition. Secondary forests take a median time of five decades to recover the species richness of old-growth forest (80% recovery after 20 years) based on rarefaction analysis. Full recovery of species composition takes centuries (only 34% recovery after 20 years). A dual strategy that maintains both old-growth forests and species-rich secondary forests is therefore crucial for biodiversity conservation in human-modified tropical landscapes.
    One-carbon metabolism biomarkers and risk of urothelial cell carcinoma in the European prospective investigation into cancer and nutrition
    Vrieling, Alina ; Bueno-De-Mesquita, H.B. ; Ros, Martine M. ; Kampman, Ellen ; Aben, Katja K. ; Büchner, Frederike L. ; Jansen, Eugène H. ; Roswall, Nina ; Tjønneland, Anne ; Boutron-Ruault, Marie Christine ; Cadeau, Claire ; Chang-Claude, Jenny ; Kaaks, Rudolf ; Weikert, Steffen ; Boeing, Heiner ; Trichopoulou, Antonia ; Lagiou, Pagona ; Trichopoulos, Dimitrios ; Sieri, Sabina ; Palli, Domenico ; Panico, Salvatore ; Peeters, Petra H. ; Weiderpass, Elisabete ; Skeie, Guri ; Jakszyn, Paula ; Chirlaque, María Dolores ; Ardanaz, Eva ; Sánchez, María José ; Ehrnström, Roy ; Malm, Johan ; Ljungberg, Börje ; Khaw, Kay Tee ; Wareham, Nick J. ; Brennan, Paul ; Johansson, Mattias ; Riboli, Elio ; Kiemeney, Lambertus A. - \ 2019
    International Journal of Cancer 145 (2019)9. - ISSN 0020-7136 - p. 2349 - 2359.
    B-vitamins - biomarker - folate - nested case–control - urothelial cell carcinomas

    Published associations between dietary folate and bladder cancer risk are inconsistent. Biomarkers may provide more accurate measures of nutrient status. This nested case–control analysis within the European Prospective Investigation into Cancer and Nutrition (EPIC) investigated associations between pre-diagnostic serum folate, homocysteine, vitamins B6 and B12 and the risk of urothelial cell carcinomas of the bladder (UCC). A total of 824 patients with newly diagnosed UCC were matched with 824 cohort members. Serum folate, homocysteine, and vitamins B6 and B12 were measured. Odds ratios (OR) and 95% confidence intervals (CI) for total, aggressive, and non-aggressive UCC were estimated using conditional logistic regression with adjustment for smoking status, smoking duration and intensity, and other potential confounders. Additionally, statistical interaction with smoking status was assessed. A halving in serum folate concentrations was moderately associated with risk of UCC (OR: 1.18; 95% CI: 0.98–1.43), in particular aggressive UCC (OR: 1.34; 95% CI: 1.02–1.75; p-heterogeneity = 0.19). Compared to never smokers in the highest quartile of folate concentrations, this association seemed only apparent among current smokers in the lowest quartile of folate concentrations (OR: 6.26; 95% CI: 3.62–10.81, p-interaction = 0.07). Dietary folate was not associated with aggressive UCC (OR: 1.26; 95% CI: 0.81–1.95; p-heterogeneity = 0.14). No association was observed between serum homocysteine, vitamins B6 and B12 and risk of UCC. This study suggests that lower serum folate concentrations are associated with increased UCC risk, in particular aggressive UCC. Residual confounding by smoking cannot be ruled out and these findings require confirmation in future studies with multiple measurements.

    Combined Effect of Light and Temperature on the Production of Saxitoxins in Cylindrospermopsis raciborskii Strains
    Mesquita, Marcella C.B. ; Lürling, Miquel ; Dorr, Fabiane ; Pinto, Ernani ; Marinho, Marcelo M. - \ 2019
    Toxins 11 (2019)1. - ISSN 2072-6651 - 15 p.
    cyanobacteria - cyanotoxins - intraspecific variability - saxitoxins

    Cylindrospermopsis raciborskii is a potentially toxic freshwater cyanobacterium that can tolerate a wide range of light and temperature. Due to climatic changes, the interaction between light and temperature is studied in aquatic systems, but no study has addressed the effect of both variables on the saxitoxins production. This study evaluated the combined effect of light and temperature on saxitoxins production and cellular quota in C. raciborskii. Experiments were performed with three C. raciborskii strains in batch cultures under six light intensities (10, 40, 60, 100, 150, and 500 μmol of photons m-2 s-1) and four temperatures (15, 20, 25, and 30 °C). The growth of C. raciborskii strains was limited at lower temperatures and the maximum growth rates were obtained under higher light combined with temperatures equal or above 20 °C, depending on the strain. In general, growth was highest at 30 °C at the lower light intensities and equally high at 25 °C and 30 °C under higher light. Highest saxitoxins concentration and cell-quota occurred at 25 °C under high light intensities, but were much lower at 30 °C. Hence, increased temperatures combined with sufficient light will lead to higher C. raciborskii biomass, but blooms could become less toxic in tropical regions.

    Short communication: detection and molecular characterization of hepatitis E virus in domestic animals of São Tomé and Príncipe
    Mesquita, João Rodrigo ; Istrate, Claudia ; Santos-Ferreira, Nânci L. ; Ferreira, Ana S. ; Abreu-Silva, Joana ; Veiga, José ; Poel, Wim H.M. van der; Nascimento, Maria S.J. - \ 2019
    Tropical Animal Health and Production 51 (2019). - ISSN 0049-4747 - p. 481 - 485.
    Domestic animals - Hepatitis E virus - São Tomé e Príncipe - Zoonoses

    As in most of the African continent, the status of hepatitis E virus (HEV) infection in domestic animals in São Tomé and Príncipe, an archipelago off the western equatorial coast of Central Africa, is also completely unknown. In the present study, we investigated the presence of HEV among domestic animals in São Tomé and Príncipe. A total of 93 stool samples from different animal species (goat, cow, pig, chicken, duck, and monkey) were tested for HEV RNA using two real-time RT-PCR assays, followed by a nested RT-PCR assay for sequencing and phylogenetic analysis. A total of six samples (1 cow stool and 5 pig stools) were found to be positive for HEV RNA of which one pig stool was positive by broad spectrum nested RT-PCR. Phylogenetic analysis showed that the retrieved sequence clustered within HEV subgenotype 3f, similar to zoonotic strains of European countries and posing interesting questions on past introduction of European HEV into São Tomé and Príncipe archipelago. This is the first report describing the presence and molecular characterization of HEV in São Tomé and Príncipe.

    A national FFQ for the Netherlands (the FFQ-NL1.0): development and compatibility with existing Dutch FFQs
    Eussen, Simone ; Dongen, M.C.J.M. van; Wijckmans, N.E. ; Meijboom, S. ; Brants, H.A.M. ; Vries, J.H.M. de; Bueno-de-Mesquita, H.B. ; Geelen, M.M.E.E. ; Sluik, D. ; Feskens, E.J.M. ; Ocke, M.C. ; Dagnelie, P.C. - \ 2018
    Public Health Nutrition 21 (2018)12. - ISSN 1368-9800 - p. 2221 - 2229.
    Objective In the Netherlands, various FFQs have been administered in large cohort studies, which hampers comparison and pooling of dietary data. The present study aimed to describe the development of a standardized Dutch FFQ, FFQ-NL1.0, and assess its compatibility with existing Dutch FFQs. Design Dutch FFQTOOLTM was used to develop the FFQ-NL1.0 by selecting food items with the largest contributions to total intake and explained variance in intake of energy and thirty-nine nutrients in adults aged 25–69 years from the Dutch National Food Consumption Survey (DNFCS) 2007–2010. Compatibility with the Maastricht-FFQ, Wageningen-FFQ and EPICNL-FFQ was assessed by comparing the number of food items, the covered energy and nutrient intake, and the covered variance in intake. Results FFQ-NL1.0 comprised 160 food items, v. 253, 183 and 154 food items for the Maastricht-FFQ, Wageningen-FFQ and EPICNL-FFQ, respectively. FFQ-NL1.0 covered ≥85 % of energy and all nutrients reported in the DNFCS. Covered variance in intake ranged from 57 to 99 % for energy and macronutrients, and from 45 to 93 % for micronutrients. Differences between FFQ-NL1.0 and the other FFQs in covered nutrient intake and covered variance in intake were <5 % for energy and all macronutrients. For micronutrients, differences between FFQ-NL and other FFQs in covered level of intake were <15 %, but differences in covered variance were much larger, the maximum difference being 36 %. Conclusions The FFQ-NL1.0 was compatible with other FFQs regarding energy and macronutrient intake. However, compatibility for covered variance of intake was limited for some of the micronutrients. If implemented in existing cohorts, it is advised to administer the old and the new FFQ in combination to derive calibration factors.
    Impact of prediagnostic smoking and smoking cessation on colorectal cancer prognosis : A meta-analysis of individual patient data from cohorts within the CHANCES consortium
    Ordóñez-Mena, J.M. ; Walter, V. ; Schöttker, B. ; Jenab, M. ; O'Doherty, M.G. ; Kee, F. ; Bueno-de-Mesquita, B. ; Peeters, P.H.M. ; Stricker, B.H. ; Ruiter, R. ; Hofman, A. ; Söderberg, S. ; Jousilahti, P. ; Kuulasmaa, K. ; Freedman, N.D. ; Wilsgaard, T. ; Wolk, A. ; Nilsson, L.M. ; Tjønneland, A. ; Quirós, J.R. ; Duijnhoven, F.J.B. van; Siersema, P.D. ; Boffetta, P. ; Trichopoulou, A. ; Brenner, H. - \ 2018
    Annals of Oncology 29 (2018)2. - ISSN 0923-7534 - p. 472 - 483.
    Colorectal neoplasms - Meta-analysis - Smoking - Smoking cessation - Survival
    Background: Smoking has been associated with colorectal cancer (CRC) incidence and mortality in previous studies and might also be associated with prognosis after CRC diagnosis. However, current evidence on smoking in association with CRC prognosis is limited. Patients and methods: For this individual patient data meta-analysis, sociodemographic and smoking behavior information of 12 414 incident CRC patients (median age at diagnosis: 64.3 years), recruited within 14 prospective cohort studies among previously cancer-free adults, was collected at baseline and harmonized across studies. Vital status and causes of death were collected for a mean follow-up time of 5.1 years following cancer diagnosis. Associations of smoking behavior with overall and CRC-specific survival were evaluated using Cox regression and standard meta-analysis methodology. Results: A total of 5229 participants died, 3194 from CRC. Cox regression revealed significant associations between former [hazard ratio (HR)=1.12; 95 % confidence interval (CI)=1.04-1.20] and current smoking (HR=1.29; 95% CI=1.04-1.60) and poorer overall survival compared with never smoking. Compared with current smoking, smoking cessation was associated with improved overall (HR<10 years=0.78; 95% CI=0.69-0.88; HR≥10 years=0.78; 95% CI=0.63-0.97) and CRC-specific survival (HR≥10 years=0.76; 95% CI=0.67-0.85). Conclusion: In this large meta-analysis including primary data of incident CRC patients from 14 prospective cohort studies on the association between smoking and CRC prognosis, former and current smoking were associated with poorer CRC prognosis compared with never smoking. Smoking cessation was associated with improved survival when compared with current smokers. Future studies should further quantify the benefits of nonsmoking, both for cancer prevention and for improving survival among CRC patients, in particular also in terms of treatment response.
    Circulating concentrations of vitamin D in relation to pancreatic cancer risk in European populations
    Duijnhoven, Fränzel J.B. van; Jenab, Mazda ; Hveem, Kristian ; Siersema, Peter D. ; Fedirko, Veronika ; Duell, Eric J. ; Kampman, Ellen ; Halfweeg, Anouk ; Kranen, Henk J. van; Ouweland, Jody M.W. van den; Weiderpass, Elisabete ; Murphy, Neil ; Langhammer, Arnulf ; Ness-Jensen, Eivind ; Olsen, Anja ; Tjønneland, Anne ; Overvad, Kim ; Cadeau, Claire ; Kvaskoff, Marina ; Boutron-Ruault, Marie Christine ; Katzke, Verena A. ; Kühn, Tilman ; Boeing, Heiner ; Trichopoulou, Antonia ; Kotanidou, Anastasia ; Kritikou, Maria ; Palli, Domenico ; Agnoli, Claudia ; Tumino, Rosario ; Panico, Salvatore ; Matullo, Giuseppe ; Peeters, Petra ; Brustad, Magritt ; Olsen, Karina Standahl ; Lasheras, Cristina ; Obón-Santacana, Mireia ; Sánchez, María José ; Dorronsoro, Miren ; Chirlaque, Maria Dolores ; Barricarte, Aurelio ; Manjer, Jonas ; Almquist, Martin ; Renström, Frida ; Ye, Weimin ; Wareham, Nick ; Khaw, Kay Tee ; Bradbury, Kathryn E. ; Freisling, Heinz ; Aune, Dagfinn ; Norat, Teresa ; Riboli, Elio ; Bueno-de-Mesquita, H.B. - \ 2018
    International Journal of Cancer 142 (2018)6. - ISSN 0020-7136 - p. 1189 - 1201.
    Cancer epidemiology - Nested case-control study - Pancreatic cancer - Vitamin D
    Evidence from in vivo, in vitro and ecological studies are suggestive of a protective effect of vitamin D against pancreatic cancer (PC). However, this has not been confirmed by analytical epidemiological studies. We aimed to examine the association between pre-diagnostic circulating vitamin D concentrations and PC incidence in European populations. We conducted a pooled nested case-control study within the European Prospective Investigation into Cancer and Nutrition (EPIC) and the Nord-Trøndelag Health Study's second survey (HUNT2) cohorts. In total, 738 primary incident PC cases (EPIC n=626; HUNT2 n=112; median follow-up=6.9 years) were matched to 738 controls. Vitamin D [25(OH)D2 and 25(OH)D3 combined] concentrations were determined using isotope-dilution liquid chromatography-tandem mass spectrometry. Conditional logistic regression models with adjustments for body mass index and smoking habits were used to estimate incidence rate ratios (IRRs) and 95% confidence intervals (95%CI). Compared with a reference category of >50 to 75 nmol/L vitamin D, the IRRs (95% CIs) were 0.71 (0.42-1.20); 0.94 (0.72-1.22); 1.12 (0.82-1.53) and 1.26 (0.79-2.01) for clinically pre-defined categories of ≤25; >25 to 50; >75 to 100; and >100 nmol/L vitamin D, respectively (p for trend=0.09). Corresponding analyses by quintiles of season-standardized vitamin D concentrations also did not reveal associations with PC risk (p for trend=0.23). Although these findings among participants from the largest combination of European cohort studies to date show increasing effect estimates of PC risk with increasing pre-diagnostic concentrations of vitamin D, they are not statistically significant.
    Evaluating dietary supply of microminerals as a premix in a complete plant ingredient-based diet to juvenile rainbow trout (Oncorhynchus mykiss)
    Prabhu, P.A.J. ; Schrama, J.W. ; Fontagné-Dicharry, S. ; Mariojouls, C. ; Surget, A. ; Bueno de Mesquita, M. ; Geurden, I. ; Kaushik, Sadasivam J. - \ 2018
    Aquaculture Nutrition 24 (2018)1. - ISSN 1353-5773 - p. 539 - 547.
    Fishmeal replacement - Micro minerals - Premix - Rainbow trout - Requirement - Supplement - Trace minerals
    Two basal diets M0 and V0 were formulated with marine and plant based ingredient composition. Seven experimental diets were prepared from the two basal diets namely M0, M100, V0, V30, V60, V100 and V150 by incorporating different levels of a micromineral premix (Cu, Fe, Mn, Se and Zn). Triplicate groups of rainbow trout (initial weight: 20 g) reared at 17°C were fed one of each diet to apparent visual satiation over 12 weeks. Among the V diet fed fish, growth and feed intake exhibited maximal response at V60 level of premix inclusion; Apparent availability coefficient of Fe, Cu and Zn decreased linearly with increasing level of premix whereas apparent availability coefficient of Mn and Se was unaffected. The available dietary concentration in basal V0 diet was for Fe, 20.6; Cu, 2.8; Mn, 6.5; Zn, 17.3 and Se, 0.195 (in mg/kg DM) and in the M0 diet for Fe, 63.3; Cu, 5.2; Mn, 2.9; Zn, 35.2 and Se, 0.87 (in mg/kg DM). In reference to NRC (Nutrient requirements of fish and shrimp. Washington, DC: National Research Council, The National Academies Press, 2011) recommendations, the V0 basal diet accounted for 34.3%, 92.9%, 53.9%, 115% and 130.2% and the contribution from M0 diet for 105.5%, 173.3%, 24.2%, 234.7% and 580% of the minimal dietary inclusion levels of Fe, Cu, Mn, Zn and Se to rainbow trout, respectively. However, data on whole body mineral contents showed that normal levels were maintained only for Cu and Mn through supply from basal V0 diet. For Zn and Se, available supply even from the highest supplemented diet (V150) was not sufficient to maintain normal body mineral levels of rainbow trout in the present study. On the whole, optimal dietary inclusion levels of microminerals are altered while using fishmeal-free diets for rainbow trout.
    Reply to Schöngart et al. : Forest resilience variation across Amazonian floodplains
    Flores, B.M. ; Holmgren Urba, Milena ; Xu, Chi ; Nes, Egbert H. van; Jakovac, Catarina C. ; Mesquita, Rita C.G. ; Scheffer, Marten - \ 2017
    Proceedings of the National Academy of Sciences of the United States of America 114 (2017)41. - ISSN 0027-8424 - p. E8552 - E8554.
    Self-rated health and all-cause and cause-specific mortality of older adults. Individual data meta-analysis of prospective cohort studies in the CHANCES Consortium
    Bamia, Christina ; Orfanos, Philippos ; Juerges, H. ; Schöttker, Ben ; Brenner, Hermann ; Lorbeer, Roberto ; Aadahl, Mette ; Matthews, Charles E. ; Bueno-de Mesquita, H.B. ; Groot, C.P.G.M. de - \ 2017
    Maturitas 103 (2017). - ISSN 0378-5122 - p. 37 - 44.
    Objectives
    To evaluate, among the elderly, the association of self-rated health (SRH) with mortality, and to identify determinants of self-rating health as “at-least-good”.

    Study Design
    Individual data on SRH and important covariates were obtained for 424,791 European and Unites States residents, ≥60 years at recruitment (1982-2008), in eight prospective studies in the Consortium on Health and Ageing: Network of Cohorts in Europe and the United States (CHANCES). In each study, adjusted mortality ratios (hazard ratios, HRs) in relation to SRH were calculated and subsequently combined with random-effect meta-analyses.

    Main outcome measures
    All-cause, cardiovascular and cancer mortality.

    Results
    Within the median 12.5 years of follow-up, 93,014 (22%) deaths occurred. SRH “fair” or “poor” vs. “at-least-good” was associated with increased mortality: HRs 1.46 (95% CI 1·23-1.74) and 2.31 (1.79-2.99), respectively. These associations were evident: for cardiovascular and, to a lesser extent, cancer mortality, and within-study, within-subgroup analyses. Accounting for lifestyle, sociodemographic, somatometric factors and, subsequently, for medical history explained only a modest amount of the unadjusted associations. Factors favourably associated with SRH were: sex (males), age (younger-old), education (high), marital status (married/cohabiting), physical activity (active), body mass index (non-obese), alcohol consumption (low to moderate) and previous morbidity (absence).

    Conclusion
    SRH provides a quick and simple tool for assessing health and identifying groups of elders at risk of early mortality that may be useful also in clinical settings. Modifying determinants of favourably rating health, e.g. by increasing physical activity and/or by eliminating obesity, may be important for older adults to “feel healthy” and “be healthy”.
    Floodplains as an Achilles' heel of Amazonian forest resilience
    Flores, Bernardo M. ; Holmgren Urba, Milena ; Xu, Chi ; Nes, Egbert H. van; Conte Jakovac, Catarina ; Mesquita, Rita C.G. ; Scheffer, Marten - \ 2017
    Proceedings of the National Academy of Sciences of the United States of America 114 (2017)17. - ISSN 0027-8424 - p. 4442 - 4446.
    Climate change - Drought - Fire - Tropical forest - Tropical savanna

    The massive forests of central Amazonia are often considered relatively resilient against climatic variation, but this view is challenged by the wildfires invoked by recent droughts. The impact of such fires that spread from pervasive sources of ignition may reveal where forests are less likely to persist in a drier future. Here we combine field observations with remotely sensed information for the whole Amazon to show that the annually inundated lowland forests that run through the heart of the system may be trapped relatively easily into a fire-dominated savanna state. This lower forest resilience on floodplains is suggested by patterns of tree cover distribution across the basin, and supported by our field and remote sensing studies showing that floodplain fires have a stronger and longer-lasting impact on forest structure as well as soil fertility. Although floodplains cover only 14% of the Amazon basin, their fires can have substantial cascading effects because forests and peatlands may release large amounts of carbon, and wildfires can spread to adjacent uplands. Floodplains are thus an Achilles' heel of the Amazon system when it comes to the risk of large-scale climatedriven transitions.

    Demographic Drivers of Aboveground Biomass Dynamics During Secondary Succession in Neotropical Dry and Wet Forests
    Rozendaal, Danaë M.A. ; Chazdon, Robin L. ; Arreola-Villa, Felipe ; Balvanera, Patricia ; Bentos, Tony V. ; Dupuy, Juan M. ; Hernández-Stefanoni, J.L. ; Jakovac, Catarina C. ; Lebrija-Trejos, Edwin E. ; Lohbeck, Madelon ; Martínez-Ramos, Miguel ; Massoca, Paulo E.S. ; Meave, Jorge A. ; Mesquita, Rita C.G. ; Mora, Francisco ; Pérez-García, Eduardo A. ; Romero-Pérez, I.E. ; Saenz-Pedroza, Irving ; Breugel, Michiel van; Williamson, G.B. ; Bongers, Frans - \ 2017
    Ecosystems 20 (2017)2. - ISSN 1432-9840 - p. 340 - 353.
    Biomass accumulation - carbon sink - forest dynamics - Neotropics - second-growth tropical forest - species’ dominance - tree demography

    The magnitude of the carbon sink in second-growth forests is expected to vary with successional biomass dynamics resulting from tree growth, recruitment, and mortality, and with the effects of climate on these dynamics. We compare aboveground biomass dynamics of dry and wet Neotropical forests, based on monitoring data gathered over 3–16 years in forests covering the first 25 years of succession. We estimated standing biomass, annual biomass change, and contributions of tree growth, recruitment, and mortality. We also evaluated tree species’ contributions to biomass dynamics. Absolute rates of biomass change were lower in dry forests, 2.3 and 1.9 Mg ha−1 y−1, after 5–15 and 15–25 years after abandonment, respectively, than in wet forests, with 4.7 and 6.1 Mg ha−1 y−1, in the same age classes. Biomass change was largely driven by tree growth, accounting for at least 48% of biomass change across forest types and age classes. Mortality also contributed strongly to biomass change in wet forests of 5–15 years, whereas its contribution became important later in succession in dry forests. Biomass dynamics tended to be dominated by fewer species in early-successional dry than wet forests, but dominance was strong in both forest types. Overall, our results indicate that biomass dynamics during succession are faster in Neotropical wet than dry forests, with high tree mortality earlier in succession in the wet forests. Long-term monitoring of second-growth tropical forest plots is crucial for improving estimates of annual biomass change, and for enhancing understanding of the underlying mechanisms and demographic drivers.

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