Search

Your search keyword '"Brodie, Jedediah F."' showing total 361 results
Start Over "Brodie, Jedediah F."

Refine your results

more »

more »

more »

more »

more »

more »
361 results on '"Brodie, Jedediah F."'

51. Determinants of sun bear Helarctos malayanus habitat use in Sabah, Malaysian Borneo and its predicted distribution under future forest degradation and loss

Author

Guharajan, Roshan, primary, Abrams, Jesse F., additional, Abram, Nicola K., additional, Lim, Hong Ye, additional, Clements, Gopalasamy Reuben, additional, Deere, Nicolas J., additional, Struebig, Matthew J., additional, Goossens, Benoit, additional, Gardner, Penny C., additional, Brodie, Jedediah F., additional, Granados, Alys, additional, Teoh, Shu Woan, additional, Hearn, Andrew J., additional, Ross, Joanna, additional, Macdonald, David W., additional, Mohamed, Azlan, additional, Wong, Seth T., additional, Hastie, Alexander Y. L., additional, Wong, Wai-Ming, additional, Kretzschmar, Petra, additional, Wong, Siew Te, additional, Koh, Sharon P. H., additional, and Wilting, Andreas, additional

Published
2022
Full Text
View/download PDF

61. Predicting how defaunation‐induced changes in seed predation and dispersal will affect tropical tree populations.

Author

Williams, Peter Jeffrey and Brodie, Jedediah F.

Subjects
*PREDATION, *SEED dispersal, *CARBON sequestration in forests, *SEED size, *ANIMAL-plant relationships, *CARBON cycle
Abstract

The loss of large animals due to overhunting and habitat loss potentially affects tropical tree populations and carbon cycling. Trees reliant on large‐bodied seed dispersers are thought to be particularly negatively affected by defaunation. But besides seed dispersal, defaunation can also increase or decrease seed predation. It remains unclear how these different defaunation effects on early life stages ultimately affect tree population dynamics. We reviewed the literature on how tropical animal loss affects different plant life stages, and we conducted a meta‐analysis of how defaunation affects seed predation. We used this information to parameterize models that altered matrix projection models from a suite of tree species to simulate defaunation‐caused changes in seed dispersal and predation. We assessed how applying these defaunation effects affected population growth rates. On average, population‐level effects of defaunation were negligible, suggesting that defaunation may not cause the massive reductions in forest carbon storage that have been predicted. In contrast to previous hypotheses, we did not detect an effect of seed size on changes in seed predation rates. The change in seed predation did not differ significantly between exclosure experiments and observational studies, although the results of observational studies were far more variable. Although defaunation surely affects certain tree taxa, species that benefit or are harmed by it and net changes in forest carbon storage cannot currently be predicted based on available data. Further research on how factors such as seed predation vary across tree species and defaunation scenarios is necessary for understanding cascading changes in species composition and diversity. [ABSTRACT FROM AUTHOR]

Published
2023
Full Text
View/download PDF

62. Ecology, occurrence and distribution of wild felids in Sarawak, Malaysian Borneo.

Author

Mohd-Azlan, Jayasilan, Kaicheen, Sally Soo, Hong, Lisa Lok Choy, Yi, Melynda Cheok Ka, Maiwald, Marius Joscha, Helmy, Olga E., Giordano, Anthony J., and Brodie, Jedediah F.

Subjects
MOUNTAIN forests, HABITAT destruction, FOREST productivity, LEOPARD, HABITATS, OIL palm
Abstract

Sarawak is the largest state in the megadiverse country of Malaysia. Its rich biodiversity is threatened by land-use change and hunting, with mammalian carnivores particularly affected. Data on the ecology, occurrence and distribution of small carnivores are crucial to inform their effective conservation, but no large-scale assessments have previously been conducted in Sarawak. Here we examine the status of the five species of felids in Sarawak based on data from camera-trap studies over 17 years (May 2003–February 2021) across 31 study areas, including protected areas of various sizes, production forests and forest matrix within oil palm plantations. Felids were detected at 39% of 845 camera stations. The marbled cat Pardofelis marmorata and Sunda clouded leopard Neofelis diardi had higher probabilities of occurrence in protected than unprotected areas, and vice versa for the leopard cat Prionailurus bengalensis and bay cat Catopuma badia. The marbled and bay cats were mostly diurnal, and the leopard cat was predominantly nocturnal; activity patterns did not substantively differ between protected and unprotected sites. The probabilities of occurrence of marbled and bay cats increased with greater distance from roads. The leopard cat and flat-headed cat Prionailurus planiceps were more likely, and the clouded leopard less likely, to occur near rivers. Flat-headed cats preferred peat swamp forest, bay cats lowland forest, and marbled cats and clouded leopards occurred in both lowland and montane forest. Felids may tolerate higher elevations to avoid anthropogenic disturbance; therefore, it is critical to preserve lowland and mid-elevation habitats that provide refugia from climate change and the destruction of lowland habitat. [ABSTRACT FROM AUTHOR]

Published
2023
Full Text
View/download PDF

72. Global camera trap synthesis highlights the importance of protected areas in maintaining mammal diversity

Author

Chen, Cheng, primary, Brodie, Jedediah F., additional, Kays, Roland, additional, Davies, T. Jonathan, additional, Liu, Runzhe, additional, Fisher, Jason T., additional, Ahumada, Jorge, additional, McShea, William, additional, Sheil, Douglas, additional, Agwanda, Bernard, additional, Andrianarisoa, Mahandry H., additional, Appleton, Robyn D., additional, Bitariho, Robert, additional, Espinosa, Santiago, additional, Grigione, Melissa M., additional, Helgen, Kristofer M., additional, Hubbard, Andy, additional, Hurtado, Cindy M., additional, Jansen, Patrick A., additional, Jiang, Xuelong, additional, Jones, Alex, additional, Kalies, Elizabeth L., additional, Kiebou‐Opepa, Cisquet, additional, Li, Xueyou, additional, Lima, Marcela Guimarães Moreira, additional, Meyer, Erik, additional, Miller, Anna B., additional, Murphy, Thomas, additional, Piana, Renzo, additional, Quan, Rui‐Chang, additional, Rota, Christopher T., additional, Rovero, Francesco, additional, Santos, Fernanda, additional, Schuttler, Stephanie, additional, Uduman, Aisha, additional, Bommel, Joanna Klees, additional, Young, Hilary, additional, and Burton, A. Cole, additional

Published
2022
Full Text
View/download PDF

78. Assisted colonization risk assessment—Response

Author

Brodie, Jedediah F., primary, Lieberman, Susan, additional, Moehrenschlager, Axel, additional, Redford, Kent H., additional, Rodríguez, Jon Paul, additional, Schwartz, Mark, additional, Seddon, Philip J., additional, and Watson, James E. M., additional

Published
2021
Full Text
View/download PDF

79. Global policy for assisted colonization of species

Author

Brodie, Jedediah F., primary, Lieberman, Susan, additional, Moehrenschlager, Axel, additional, Redford, Kent H., additional, Rodríguez, Jon Paul, additional, Schwartz, Mark, additional, Seddon, Philip J., additional, and Watson, James E. M., additional

Published
2021
Full Text
View/download PDF

80. Detailed circuit-theoretic methods & supplementary figures and tables from Predicting defaunation: accurately mapping bushmeat hunting pressure over large areas

Author

Mairin C. M. Deith and Brodie, Jedediah F.

Abstract

This file contains detailed descriptions of the methods used to create the resistance surface, identify source and sink locations, and run the GFLOW simulation software to create the circuit theoretic accessibility metric. It also contains Figures S1-S6 and Table S1.

Published
2020
Full Text
View/download PDF

81. Advancing an interdisciplinary framework to study seed dispersal ecology

Author

Beckman, Noelle G., Aslan, Clare E., Rogers, Haldre S., Kogan, Oleg, Bronstein, Judith L., Bullock, James M., Hartig, Florian, HilleRisLambers, Janneke, Zhou, Ying, Zurell, Damaris, Brodie, Jedediah F., Bruna, Emilio M., Cantrell, Robert Stephen, Decker, Robin R., Efiom, Edu, Fricke, Evan C., Gurski, Katherine, Hastings, Alan, Johnson, Jeremy S., Loiselle, Bette A., Miriti, Maria N., Neubert, Michael G., Pejchar, Liba, Poulsen, John R., Pufal, Gesine, Razafindratsima, Onja H., Sandor, Manette E., Shea, Katriona, Schreiber, Sebastian, Schupp, Eugene W., Snell, Rebecca S., Strickland, Christopher, Zambrano, Jenny, Beckman, Noelle G., Aslan, Clare E., Rogers, Haldre S., Kogan, Oleg, Bronstein, Judith L., Bullock, James M., Hartig, Florian, HilleRisLambers, Janneke, Zhou, Ying, Zurell, Damaris, Brodie, Jedediah F., Bruna, Emilio M., Cantrell, Robert Stephen, Decker, Robin R., Efiom, Edu, Fricke, Evan C., Gurski, Katherine, Hastings, Alan, Johnson, Jeremy S., Loiselle, Bette A., Miriti, Maria N., Neubert, Michael G., Pejchar, Liba, Poulsen, John R., Pufal, Gesine, Razafindratsima, Onja H., Sandor, Manette E., Shea, Katriona, Schreiber, Sebastian, Schupp, Eugene W., Snell, Rebecca S., Strickland, Christopher, and Zambrano, Jenny

Abstract

Although dispersal is generally viewed as a crucial determinant for the fitness of any organism, our understanding of its role in the persistence and spread of plant populations remains incomplete. Generalizing and predicting dispersal processes are challenging due to context dependence of seed dispersal, environmental heterogeneity and interdependent processes occurring over multiple spatial and temporal scales. Current population models often use simple phenomenological descriptions of dispersal processes, limiting their ability to examine the role of population persistence and spread, especially under global change. To move seed dispersal ecology forward, we need to evaluate the impact of any single seed dispersal event within the full spatial and temporal context of a plant’s life history and environmental variability that ultimately influences a population’s ability to persist and spread. In this perspective, we provide guidance on integrating empirical and theoretical approaches that account for the context dependency of seed dispersal to improve our ability to generalize and predict the consequences of dispersal, and its anthropogenic alteration, across systems. We synthesize suitable theoretical frameworks for this work and discuss concepts, approaches and available data from diverse subdisciplines to help operationalize concepts, highlight recent breakthroughs across research areas and discuss ongoing challenges and open questions. We address knowledge gaps in the movement ecology of seeds and the integration of dispersal and demography that could benefit from such a synthesis. With an interdisciplinary perspective, we will be able to better understand how global change will impact seed dispersal processes, and potential cascading effects on plant population persistence, spread and biodiversity.

Published
2020

85. Incorporating connectivity into conservation planning for the optimal representation of multiple species and ecosystem services

Author

Williams, Sara H., primary, Scriven, Sarah A., additional, Burslem, David F. R. P., additional, Hill, Jane K., additional, Reynolds, Glen, additional, Agama, Agnes L., additional, Kugan, Frederick, additional, Maycock, Colin R., additional, Khoo, Eyen, additional, Hastie, Alexander Y. L., additional, Sugau, John B., additional, Nilus, Reuben, additional, Pereira, Joan T., additional, Tsen, Sandy L. T., additional, Lee, Leung Y., additional, Juiling, Suzika, additional, Hodgson, Jenny A., additional, Cole, Lydia E. S., additional, Asner, Gregory P., additional, Evans, Luke J., additional, and Brodie, Jedediah F., additional

Published
2020
Full Text
View/download PDF

87. Assessing the effectiveness of protected areas for conserving range-restricted rainforest butterflies in Sabah, Borneo

Author

Scriven, Sarah Anne-Leigh, Williams, Sara H., Ghani, Mazidi A., Agama, Agnes L., Benedick, Suzan, Brodie, Jedediah F., Hamer, Keith C., McClean, Colin John, Reynolds, Glen, and Hill, Jane Katharine

Abstract

Rainforests on Borneo support exceptional concentrations of endemic insect biodiversity, but many of these forest-dependent species are threatened by land-use change. Totally protected areas (TPAs) of forest are key for conserving biodiversity, and we examined the effectiveness of the current TPA network for conserving range-restricted butterflies in Sabah (Malaysian Borneo). We found that mean diurnal temperature range and precipitation of the wettest quarter of the year were the most important predictors of butterfly distributions (N = 77 range-restricted species), and that species richness increased with elevation and aboveground forest carbon. On average across all species, TPAs were effective at conserving ~43% of species’ ranges, but encompassed only ~40% of areas with high species richness (i.e. containing at least 50% of our study species). The TPA network also included only 33-40% of areas identified as high priority for conserving range-restricted species, as determined by a systematic conservation prioritization analysis. Hence, the current TPA network is reasonably effective at conserving range-restricted butterflies, although considerable areas of high species richness (6565 km2) and high conservation priority (11,152-12,531 km2) are not currently protected. Sabah’s remaining forests, and the range-restricted species they support, are under continued threat from agricultural expansion and urban development, and our study highlights important areas of rainforest that require enhanced protection.

Published
2019

88. Supplemental data description and results from Bushmeat biogeochemistry: hunting tropical mammals alters ecosystem phosphorus budgets

Author

Brodie, Jedediah F. and McIntyre, Peter B.

Abstract

Wild meat (or ‘bushmeat’) hunting is nearly ubiquitous across the tropics and is very often unsustainable—driving declines and extirpation of numerous mammal populations. Loss of these animals can alter the transport of nutrients within and between ecosystems. But whether the physical removal of vertebrate carcasses and the nutrients that they store can reduce overall nutrient availability in ecosystems has been little explored. At 32 sites on three continents, we show that annual phosphorus (P) loss via mammal exploitation was low relative to the rate of atmospheric P deposition. But at four sites in Africa and Southeast Asia, removal of P in the skeletons of hunted mammals exceeded the atmospheric input of this nutrient by 10-fold or more. Because P is the growth-limiting nutrient for many tropical terrestrial ecosystems and certain large mammals, the imbalance created by the removal of mammal biomass under very high hunting scenarios could reduce ecosystem carrying capacity if no compensatory P additions occur in the system. This biogeochemical perspective on bushmeat exploitation raises further concerns about harvest sustainability and human food security in areas where hunting rates are high and ecosystem P inputs low.

Published
2019
Full Text
View/download PDF

89. Understanding the distribution of bushmeat hunting effort across landscapes by testing hypotheses about human foraging.

Author

Brodie, Jedediah F. and Fragoso, Jose M. V.

Subjects
*BUSHMEAT hunting, *STRUCTURAL equation modeling, *LANDSCAPES, *LAND cover, *LATENT structure analysis, *HUMAN mechanics
Abstract

Mitigating the massive impacts of defaunation on natural ecosystems requires understanding and predicting hunting effort across the landscape. But such understanding has been hindered by the difficulty of assessing the movement patterns of hunters in thick forests and across complex terrain. We statistically tested hypotheses about the spatial distribution of hunting with circuit theory and structural equation models. We used a data set of >7000 known kill locations in Guyana and hunter movement models to test these methods. Comparing models with different resistance layers (i.e., different estimates of how terrain and land cover influence human movement speed) showed that rivers, on average, limited movement rather than serving as transport arteries. Moreover, far more kills occurred close to villages than in remote areas. This, combined with the lack of support for structural equation models that included latent terms for prey depletion driven by past overhunting, suggests that kill locations in this system tended to be driven by where hunters were currently foraging rather than by influences of historical harvest. These analyses are generalizable to a variety of ecosystems, species, and data types, providing a powerful way of enhancing maps and predictions of hunting effort across complex landscapes. Article impact statement: Locations of bushmeat hunter kill sites in Guyana seem driven by where hunters go currently rather than by historical influences of harvest. [ABSTRACT FROM AUTHOR]

Published
2021
Full Text
View/download PDF

92. Advancing an interdisciplinary framework to study seed dispersal ecology

Author

Beckman, Noelle G, primary, Aslan, Clare E, primary, Rogers, Haldre S, primary, Kogan, Oleg, primary, Bronstein, Judith L, primary, Bullock, James M, primary, Hartig, Florian, primary, HilleRisLambers, Janneke, primary, Zhou, Ying, primary, Zurell, Damaris, primary, Brodie, Jedediah F, primary, Bruna, Emilio M, primary, Cantrell, Robert Stephen, primary, Decker, Robin R, primary, Efiom, Edu, primary, Fricke, Evan C, primary, Gurski, Katherine, primary, Hastings, Alan, primary, Johnson, Jeremy S, primary, Loiselle, Bette A, primary, Miriti, Maria N, primary, Neubert, Michael G, primary, Pejchar, Liba, primary, Poulsen, John R, primary, Pufal, Gesine, primary, Razafindratsima, Onja H, primary, Sandor, Manette E, primary, Shea, Katriona, primary, Schreiber, Sebastian, primary, Schupp, Eugene W, primary, Snell, Rebecca S, primary, Strickland, Christopher, primary, and Zambrano, Jenny, primary

Published
2019
Full Text
View/download PDF

96. Seed predation increases from the Arctic to the Equator and from high to low elevations

Author

Hargreaves, A. L., primary, Suárez, Esteban, additional, Mehltreter, Klaus, additional, Myers-Smith, Isla, additional, Vanderplank, Sula E., additional, Slinn, Heather L., additional, Vargas-Rodriguez, Yalma L., additional, Haeussler, Sybille, additional, David, Santiago, additional, Muñoz, Jenny, additional, Carlos Almazán-Núñez, R., additional, Loughnan, Deirdre, additional, Benning, John W., additional, Moeller, David A., additional, Brodie, Jedediah F., additional, Thomas, Haydn J.D., additional, and Morales M., P. A., additional

Published
2019
Full Text
View/download PDF

99. Resilience of terrestrial mammals to logging in an active concession in Sarawak, Borneo.

Author

Maiwald, Marius Joscha, Mohd-Azlan, Jayasilan, and Brodie, Jedediah F.

Subjects
LOGGING, SPECIES diversity, FOREST animals, KNOWLEDGE gap theory, ANIMAL populations
Abstract

Selective logging is very widespread across the tropics and can alter the habitat for myriad wildlife species. But while many studies have assessed the impacts of past logging on forest animals, far fewer have investigated how species respond to logging while the timber operations are actually going on. This is an important knowledge gap because, considering the prevalence of logging across the world, numerous areas will be undergoing active extraction at any given time. We compared the occurrence and diel activity patterns of individual species of medium- to large-bodied terrestrial mammals, as well as the richness of the entire assemblage, among sites that were either unlogged, had been logged historically, or had ongoing 'reduced impact' timber extraction in the Kapit Region of Sarawak, Malaysian Borneo. We found no significant differences in estimated occupancy or activity patterns of particular species, or in overall species richness, among logging treatments. Across sites, species richness in this area appeared to be as high as or higher than in many other parts of the state, including some protected areas. Though monitoring is needed to assess potential long-term impacts, our results suggest that reduced-impact logging could allow economic development that is sustainable for many wildlife populations. [ABSTRACT FROM AUTHOR]

Published
2021
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results