Preprints

Filtering by Subject: Forest Biology

Unstratified forests dominate the tropics especially in regions with lower fertility or higher temperatures

Christopher Doughty, Camille Gaillard, Andrew Abraham, et al.

Published: 2022-11-02
Subjects: Biodiversity, Forest Biology, Plant Biology

The stratified nature of tropical forest structure had been noted by early explorers, but until recent use of satellite-based LiDAR (GEDI, or Global Ecosystems Dynamics Investigation LiDAR), there has been no way to quantify stratification across all tropical forests. Understanding stratification is important because by some estimates, a majority of the world’s species inhabit tropical forest [...]

Hematological and Biochemical Reference Intervals of the Visayan Warty Pig in Negros Occidental, Philippines

Jacqueline Rose Tuale Alipo-on, Francesca Isabelle Escobar, Jemima Loise Novia, et al.

Published: 2022-03-24
Subjects: Animal Sciences, Biodiversity, Biology, Forest Biology, Forest Sciences, Laboratory and Basic Science Research Life Sciences, Life Sciences, Other Animal Sciences, Other Life Sciences, Physiology, Zoology

The Visayan warty pig is one of the endemic species of the Philippines that have been listed as "critically endangered." Conservation actions and efforts, such as health assessments, are being carried out to preserve the population. However, there is limited information about the normal hematological and biochemical profile of the species. The study presents reference intervals essential for [...]

The Global Forest Health Crisis: A Public Good Social Dilemma in Need of International Collective Action

Geoffrey Williams, Matthew D. Ginzel, Zhao Ma, et al.

Published: 2022-03-10
Subjects: Agricultural and Resource Economics, Agricultural Economics, Agricultural Science, Agriculture, Behavioral Economics, Biodiversity, Biology, Biosecurity, Botany, Economics, Entomology, Environmental Microbiology and Microbial Ecology Life Sciences, Environmental Studies, Forest Biology, Forest Management, Forest Sciences, International Relations, Life Sciences, Microbiology, Other Forestry and Forest Sciences, Other Plant Sciences, Pathogenic Microbiology, Plant Biology, Plant Pathology, Plant Sciences, Political Science, Science and Technology Studies, Social and Behavioral Sciences

Society is confronted by interconnected threats to ecological sustainability. Among these is the devastation of forests by destructive non-native pathogens and insects introduced through global trade, leading to the loss of critical ecosystem services and a global forest health crisis. We argue that the forest health crisis is a public good social dilemma and propose a response framework that [...]

Evaluating critiques of evidence of historically heterogeneous structure and mixed-severity fires across dry-forest landscapes of the western USA

William L. Baker, Chad T. Hanson, Mark A. Williams, et al.

Published: 2021-12-30
Subjects: Forest Biology, Forest Sciences, Life Sciences

The structure and role of fire in historical dry forests, ponderosa pine (Pinus ponderosa) and dry mixed-conifer forests, of the western USA, have been debated for 25 years, leaving two theories. The first, that these forests were relatively uniform, low in tree density and dominated by low- to moderate-severity fires was recently reviewed, including a critique of opposing evidence. The second, [...]

Amazon fire regimes under climate change scenarios

Leonardo Saravia, Ben Bond-Lamberty, Samir Suweis

Published: 2021-11-16
Subjects: Ecology and Evolutionary Biology, Forest Biology, Forest Sciences, Life Sciences, Systems Biology, Terrestrial and Aquatic Ecology

Fire is one of the most important disturbances of the earth-system, shaping the biodiversity of ecosystems and particularly forests. Anthropogenic drivers such as climatic change and other human activities could produce potentially abrupt changes in fire regimes, triggering more profound transformations like the transition from forests to savannah or grasslands ecosystems. Large biodiversity loss [...]

Do forest fuel reduction treatments confer resistance to beetle infestation and drought mortality?

Zachary Steel, Marissa Goodwin, Marc Meyer, et al.

Published: 2020-08-03
Subjects: Ecology and Evolutionary Biology, Forest Biology, Forest Management, Forest Sciences, Life Sciences

Climate change is amplifying the frequency and severity of droughts and wildfires in many forests. In the western U.S., fuels reduction treatments, both mechanical and prescribed fire, are widely used to increase resilience to wildfire but their effect on resistance to drought and beetle mortality is not as well understood. We followed more than 10,000 mapped and tagged trees in a mixed-conifer [...]

Predicting tropical tree mortality with leaf spectroscopy

Christopher E. Doughty, Alexander W. Cheesman, Terhi Ruitta, et al.

Published: 2020-04-21
Subjects: Ecology and Evolutionary Biology, Forest Biology, Forest Sciences, Life Sciences, Other Ecology and Evolutionary Biology, Other Plant Sciences, Plant Sciences

Do tropical trees close to death have a distinct leaf spectral signature? Tree mortality rates have been increasing in tropical forests globally which is reducing the global carbon sink. Upcoming hyperspectral satellites could be used to predict regions close to experiencing extensive tree mortality during periods of stress like drought. Here we show how imminent tropical tree mortality in [...]

Optimising occupancy models and detection probability for conservation monitoring in a forest-dwelling small mammal

Fraser John Combe, Jonathan S Ellis, Simone Bullion, et al.

Published: 2019-08-12
Subjects: Ecology and Evolutionary Biology, Forest Biology, Forest Sciences, Life Sciences, Other Ecology and Evolutionary Biology, Population Biology

The ability to determine the survey effort required to detect species presence is critical for the conservation of populations in order to monitor changes in distribution or abundance, a challenge for rare and elusive species. While designing an effective population survey may be of concern to scientists, it may also be a legal requirement for protected species. We analysed how spatial and [...]

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