A5022211004- Wildlife Ecology and Conservation
- Environmental DNA in Biodiversity Studies
- Species Distribution and Climate Change
- Ecology and biodiversity studies
- Identification and Quantification in Food
- Rangeland and Wildlife Management
- Primate Behavior and Ecology
- Fish Ecology and Management Studies
- Ecology and Vegetation Dynamics Studies
- Conservation, Biodiversity, and Resource Management
- Zoonotic diseases and public health
- Viral Infections and Vectors
- Animal Ecology and Behavior Studies
- Animal Behavior and Welfare Studies
- Vector-borne infectious diseases
- Insect symbiosis and bacterial influences
- Human-Animal Interaction Studies
- Bat Biology and Ecology Studies
- Isotope Analysis in Ecology
- Fire effects on ecosystems
- Avian ecology and behavior
- Genetic diversity and population structure
- Genomics and Phylogenetic Studies
- Marine animal studies overview
- Rangeland Management and Livestock Ecology
Oregon State University
2016-2025
Oregon Department of Fish and Wildlife
2016-2025
Research Network (United States)
2016-2019
Wildlife Conservation Society
2016
Zoological Society of London
2016
International Union for Conservation of Nature (United Kingdom)
2016
Oregon State University Cascades
2016
Wildlife Conservation Society India
2016
University of Florida
2013-2015
Cary Institute of Ecosystem Studies
2013-2015
Abstract To manage and conserve biodiversity, one must know what is being lost, where, why, as well which remedies are likely to be most effective. Metabarcoding technology can characterise the species compositions of mass samples eukaryotes or environmental DNA . Here, we validate metabarcoding by testing it against three high‐quality standard data sets that were collected in Malaysia (tropical), China (subtropical) United Kingdom (temperate) comprised 55,813 arthropod bird specimens...
Terrestrial mammals are experiencing a massive collapse in their population sizes and geographical ranges around the world, but many of drivers, patterns consequences this decline remain poorly understood. Here we provide an analysis showing that bushmeat hunting for mostly food medicinal products is driving global crisis whereby 301 terrestrial mammal species threatened with extinction. Nearly all these occur developing countries where major coexisting threats include deforestation,...
Tropical forests are the global cornerstone of biological diversity, and store 55% forest carbon stock globally, yet sustained provisioning these ecosystem services may be threatened by hunting-induced extinctions plant-animal mutualisms that maintain long-term dynamics. Large-bodied Atelinae primates tapirs in particular offer nonredundant seed-dispersal for many large-seeded Neotropical tree species, which on average have higher wood density than smaller-seeded wind-dispersed trees. We...
Lyme disease is the most prevalent vector-borne in North America, and both annual incidence geographic range are increasing. The emergence of has been attributed to a century-long recovery deer, an important reproductive host for adult ticks. However, growing body evidence suggests that risk may now be more dynamically linked fluctuations abundance small-mammal hosts thought infect majority continuing rapid increase over past two decades, long after recolonization other factors, including...
Society values landscapes that reliably provide many ecosystem functions. As the study of functioning expands to include more locations, time spans, and functions, functional importance individual species is becoming apparent. However, does not necessarily translate biodiversity measured in whole communities interacting species. Furthermore, ecological diversity at scales larger than neighborhood richness could also influence provision multiple functions over extended scales. We created...
Due to the widespread eradication of large canids and felids, top predators in many terrestrial ecosystems are now medium-sized carnivores such as coyotes. Coyotes have been shown increase songbird rodent abundance diversity by suppressing populations small domestic cats foxes. The restoration gray wolves parts North America, however, could alter this interaction chain. Here we use a 30-year time series wolf, coyote, fox relative from state Minnesota, USA, show that suppress coyote...
From the late Pleistocene to Holocene, and now so called Anthropocene, humans have been driving an ongoing series of species declines extinctions (Dirzo et al. 2014). Large-bodied mammals are typically at a higher risk extinction than smaller ones (Cardillo 2005). However, in some circumstances terrestrial megafauna populations able recover their lost numbers due strong conservation political commitment, human cultural changes (Chapron Indeed many would be considerably worse predicaments...
Vulnerability to habitat fragmentation Habitat caused by human activities has consequences for the distribution and movement of organisms. Betts et al. present a global analysis how exposure affects composition ecological communities (see Perspective Hargreaves). In dataset consisting 4489 animal species, regions that historically experienced little disturbance tended harbor higher proportion species vulnerable fragmentation. Species in more frequently disturbed were resilient. High-latitude...
Trend analysis of the massive international hide trade in Amazonia reveals differential resilience to hunting for aquatic and terrestrial wildlife.
Abstract Changes to the community ecology of hosts for zoonotic pathogens, particularly rodents, are likely influence emergence and prevalence diseases worldwide. However, complex interactions between abiotic factors, vectors, hosts, both food resources predators difficult disentangle. Here we (1) use 19 yr data from six large field plots in southeastern New York compare effects hypothesized drivers interannual variation Lyme disease risk, including abundance acorns, deer, as well a series...
Anthropogenic disturbances can constrain the realized niche space of wildlife by inducing avoidance behaviors and altering community dynamics. Human activity might contribute to reduced partitioning carnivores that consume similar resources, both promoting tolerant species while also behavior (e.g. patterns). We investigated influence anthropogenic disturbance on habitat dietary breadth overlap among competing carnivores, explored if altered resource could be explained human‐induced shifts....
Animal and plant species differ dramatically in their quality as hosts for multi-host pathogens, but the causes of this variation are poorly understood. A group small mammals, including rodents shrews, among most competent natural reservoirs three tick-borne zoonotic Borrelia burgdorferi, Babesia microti, Anaplasma phagocytophilum, eastern North America. For a nine commonly-infected mammals spanning >2 orders magnitude body mass, we asked whether life history features or surrogates (unknown)...
Abstract Recent controversy over whether biodiversity reduces disease risk (dilution effect) has focused on the ecology of Lyme disease, a tick‐borne zoonosis. A criticism dilution effect is that increasing host species richness might amplify risk, assuming total abundance, and therefore feeding opportunities for ticks, increase with richness. In contrast, expected when poor quality hosts ticks pathogens hosts) divert tick blood meals away from competent hosts. Even if densities are...
The phenology of tick emergence has important implications for the transmission tick-borne pathogens. A long lag between nymphs in spring and larvae summer should increase persistent pathogens by allowing infected to inoculate population naive hosts that can subsequently transmit pathogen complete cycle. In contrast, greater synchrony facilitate do not produce long-lasting infections hosts. Here, we use 19 years data on blacklegged ticks attached small-mammal quantify relationship climate...
Conservation of Neotropical game species must take into account the livelihood and food security needs local human populations. Hunting management decisions should therefore rely on abundance distribution data that are as representative possible true population sizes dynamics. We simultaneously applied a commonly used encounter-based method an infrequently sign-based to estimate hunted vertebrate in 48,000-km2 indigenous landscape southern Guyana. Diurnal direct encounter collected during...
Abstract Pacific salmon are a keystone resource in Alaska, generating annual revenues of well over ~US$500 million/year. Due to their anadromous life history, adult spawners distribute amongst thousands streams, posing huge management challenge. Currently, enumerated at just few streams because reliance on human counters and, rarely, sonar. The ability detect organisms by shed tissue (environmental DNA, eDNA) promises more efficient counting method. However, although eDNA correlates...
Additional co-authors: Holly T Dublin, James A Estes, Kristoffer Everatt, Mauro Galetti, Varun R Goswami, Matt W Hayward, Simon Hedges, Michael Hoffmann, Luke TB Hunter, Graham IH Kerley, Mike Letnic, Taal Levi, John C Morrison, Paul Nelson, Thomas M Newsome, Painter, Robert Pringle, Christopher J Sandom, Terborgh, Adrian Treves, Blaire Van Valkenburgh, Vucetich, Aaron Wirsing, Arian D Wallach, Wolf, Rosie Woodroffe, Hillary Young, And Li Zhang
Abstract Noninvasive genotyping methods have become key elements of wildlife research over the last two decades, but their widespread adoption is limited by high costs, low success rates and error rates. The information lost when may lead to decreased precision in animal population densities, which could misguide conservation management actions. Single nucleotide polymorphisms (SNPs) provide a promising alternative traditionally used microsatellites as SNPs allow amplification shorter DNA...
Sea otters (Enhydra lutris) and wolves (Canis lupus) are two apex predators with strong cascading effects on ecosystem structure function. After decades of recovery from near extirpation, their ranges now overlap, allowing sea to interact for the first time in scientific record. We intensively studied during 2015 2021 an island system colonized by 2000s 2013. wolf colonization, we quantified shifts foraging behavior DNA metabarcoding 689 scats stable isotope analyses, both revealing a...
Abstract: The presence of indigenous people in tropical parks has fueled a debate over whether are conservation allies or direct threats to biodiversity. A well‐known example is the Matsigenka (or Machiguenga) population residing Manu National Park Peruvian Amazonia. Because exploitation wild meat bushmeat), especially large vertebrates, represents most significant internal threat biodiversity Manu, we analyzed 1 year participatory monitoring game offtake two native communities within...
Summary 1. Widespread hunting throughout Amazonia threatens the persistence of large primates and other vertebrates. Most studies have used models limited validity restricted spatial temporal scales to assess sustainability. 2. We use human‐demographic, game‐harvest game‐census data parameterize a spatially explicit model. explore how population growth spread, technology effort, source–sink dynamics impact density black spider monkeys Ateles chamek over time space in rainforests...