Jose W. Valdez

ORCID: 0000-0003-2690-9952
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About
Contact & Profiles
Research Areas
  • Species Distribution and Climate Change
  • Amphibian and Reptile Biology
  • Wildlife Ecology and Conservation
  • Ecology and Vegetation Dynamics Studies
  • Animal Behavior and Reproduction
  • Forest Ecology and Biodiversity Studies
  • Primate Behavior and Ecology
  • Plant and animal studies
  • Conservation, Biodiversity, and Resource Management
  • Insect and Arachnid Ecology and Behavior
  • Wildlife-Road Interactions and Conservation
  • Fish Ecology and Management Studies
  • Freshwater macroinvertebrate diversity and ecology
  • Bat Biology and Ecology Studies
  • Environmental DNA in Biodiversity Studies
  • Silk-based biomaterials and applications
  • Mollusks and Parasites Studies
  • Turtle Biology and Conservation
  • Environmental and Cultural Studies in Latin America and Beyond
  • Spider Taxonomy and Behavior Studies
  • X-ray Diffraction in Crystallography
  • Lepidoptera: Biology and Taxonomy
  • Study of Mite Species
  • Bioeconomy and Sustainability Development
  • Wildlife Conservation and Criminology Analyses

German Centre for Integrative Biodiversity Research
2021-2025

Martin Luther University Halle-Wittenberg
2022-2025

Aarhus University
2018-2022

University of Newcastle Australia
2015-2019

University of Regensburg
2019

University of Coimbra
2019

California State University, San Marcos
2015

Instituto de Acuacultura del Estado de Sonora
2015

Sonora Institute of Technology
2015

SUNY College of Environmental Science and Forestry
2014

Although species are being lost at alarming rates, previous research has provided conflicting results on the extent and even direction of global biodiversity change local scale. Here, we assessed ability to detect trends using richness how it is affected by number monitoring sites, sampling interval (i.e. time between original survey re‐survey site), measurement error (error richness), spatial grain (a proxy for taxa mobility) biases site‐selection biases). We use PREDICTS model‐based...

10.1111/ecog.06604 article EN cc-by Ecography 2023-02-09

The unsustainable use of wildlife is a primary driver global biodiversity loss. No comprehensive dataset exists on what species are in trade, their geographic origins, and trade’s ultimate impacts, which limits our ability to sustainably manage trade. United States one the world’s largest importers wildlife, with trade data compiled US Law Enforcement Management Information System (LEMIS). LEMIS provides most publicly accessible database non-the Convention International Trade Endangered...

10.1073/pnas.2410774121 article EN cc-by-nc-nd Proceedings of the National Academy of Sciences 2025-01-07

Reptiles are one of the most popular exotic pets in world, with over a third all described species currently being traded. However, commonly available reptiles typically non-threatened, captive-bred, and/or domestically obtained, which means they also largely unregulated and unmonitored, resulting large portion reptile pet trade remaining unknown. In this study, past, current, future trends were examined. Google Trends was used to determine global popularity from 2004 2020 compared results...

10.3390/ani11030676 article EN cc-by Animals 2021-03-03

Societal Impact Statement Plants play fundamental roles in ecosystems, yet merely 10% of species have an assessment their global extinction risk. Through the integration national Red Lists and comprehensive plant distribution data, we identify previously unassessed Europe that are threatened throughout geographic range thus at risk extinction. Our workflow can be replicated to facilitate disparate monitoring efforts around world help accelerate assessments. Summary A for is a biodiversity...

10.1002/ppp3.10251 article EN cc-by Plants People Planet 2022-02-10

The rapid growth of clean energy technologies is driving a rising demand for critical minerals. In 2022 at the 15th Conference Parties to Convention on Biological Diversity (COP15), seven major economies formed an alliance enhance sustainability mining these essential decarbonization However, there scarcity studies assessing threat global biodiversity. By integrating dataset with great ape density distribution, we estimated number African apes that spatially coincided industrial projects. We...

10.1126/sciadv.adl0335 article EN cc-by-nc Science Advances 2024-04-03

Observations are key to understanding the state of nature, drivers biodiversity loss and impacts on ecosystem services ultimately people. Many EU policies initiatives call for unbiased, integrated regularly updated data services. However, monitoring efforts spatially temporally fragmented, taxonomically biased not across Europe. EuropaBON has addressed this gap by developing an EU-wide framework monitoring. With deliverable, proposes terms reference Biodiversity Observation Coordination...

10.3897/arphapreprints.e128042 preprint EN cc-by 2024-05-22

In this report, we present the analysis of different available biodiversity data streams at EU and national level, both baseline monitoring data. We assess how these inform trigger policy action identify related challenges European countries relevant agencies face solutions to overcome them. To do this, consulted with more than 350 expert stakeholders from policy, research practice. The assessment identified a fragmented landscape that cannot currently easily answer all questions. Quantity...

10.3897/arphapreprints.e84517 preprint EN cc-by 2022-03-30

ABSTRACT We quantitatively tested the riverine barrier hypothesis and its influence on biogeographical distributions molecular variation in New World monkeys (Parvorder: Platyrrhini). Using mitochondrial markers (cytochrome oxidase subunit II cytochrome b), we analyzed taxonomic differences effects of geographical barriers patterns across Central South America. Nearly 80% described species are separated by barriers, including several mountain chains. River width exhibited a negative...

10.1111/btp.70028 article EN Biotropica 2025-04-11

Seedling emergence in plant communities depends on the composition soil seed bank, combination with species-specific responses to environment. It is generally assumed that this juvenile transition, known as recruitment niche, a crucial filter determines species' distributions and community assemblies. The relative importance of filter, however, has been widely debated. Empirical descriptions niche are scarce, most field studies focus environmental effects at later life stages. In study, we...

10.3389/fpls.2019.00088 article EN cc-by Frontiers in Plant Science 2019-02-06

Abstract Biodiversity research is essential for addressing the global biodiversity crisis, necessitating diverse participation and perspectives of researchers from a wide range backgrounds. However, conservation faces significant inclusivity problem because local expertise biodiversity‐rich but economically disadvantaged regions often underrepresented. This underrepresentation driven by linguistic bias, undervalued contributions, parachute science practices, capacity constraints. Although...

10.1111/cobi.14325 article EN cc-by-nc-nd Conservation Biology 2024-08-06

Abstract Amphibians are among the most globally threatened vertebrates, with habitat loss and degradation being primary drivers of their decline. While natural waterbodies essential for amphibian survival, artificial habitats can also serve as important refuges, particularly in human‐altered landscapes. This study investigates role supporting populations within villages disturbed areas Peneda‐Gerês National Park (PNPG), a protected area northern Portugal. We surveyed 162 waterbodies, 68...

10.1002/ecs2.70294 article EN cc-by Ecosphere 2025-05-01

Mitigation to offset the impacts of land development is becoming increasingly common, with reintroductions and created habitat programs used as key actions. However, numerous reviews cite high rates poor success from these programs, a need for improved monitoring scientific testing evaluate outcomes improve management We conducted extensive released population endangered green golden bell frogs, Litoria aurea, within habitat, well complementary surveys surrounding wild population. then...

10.1371/journal.pone.0159143 article EN cc-by PLoS ONE 2016-07-27

Species richness is the most commonly used metric to quantify biodiversity. However, examining dark diversity, group of missing species which can potentially inhabit a site, provide more thorough understanding processes influencing observed biodiversity and help evaluate restoration potential local habitats. So far, diversity has mainly been studied for specific habitats or large-scale landscapes, while less attention given variation across broad environmental gradients as result conditions...

10.1002/ece3.6351 article EN cc-by Ecology and Evolution 2020-06-01

Documenting temporal trends in the extent of ecosystems is essential to monitoring their status but combining this information with degree protection helps us assess effectiveness societal actions for conserving ecosystem diversity and related services. We demonstrated indicators Tropical Andes using both potential (pre-industrial) recent (~2010) distribution maps terrestrial types. measured long-term loss, representation types within current protected areas, quantifying additional offered...

10.3390/rs14122847 article EN cc-by Remote Sensing 2022-06-14

Abstract In highly ephemeral freshwater habitats, predatory vertebrates are typically unable to become established, leaving an open niche often filled by macroinvertebrate predators. However, these predators faced with the challenge of finding sufficient food sources as rapid rate desiccation prevents establishment extended chains and limits number prey species present. It could therefore be advantageous for synchronize their phenology that within sites extreme ephemerality. We report first...

10.1111/ens.12381 article EN Entomological Science 2019-10-07

Abstract Due to resource limitations and physical constraints of the reproducing female, a trade‐off must be made between number eggs she produces their size per clutch. This generally results in an inverse relationship egg clutch size, which has been found repeatedly across animal groups. Few studies have investigated this with respect selection pressures, environmental variables other life‐history traits. We aimed test current hypotheses regarding among three Australian Anuran families...

10.1111/aec.13154 article EN cc-by Austral Ecology 2022-02-21

EuropaBON harnesses the power of modelling Essential Biodiversity Variables (EBVs) to integrate different reporting streams, data sources, and monitoring schemes, measure biodiversity change across multiple dimensions in space time. Therefore, EBVs are at core project form basis for several tasks feeding into co-design a system Europe. In this document, we describe stepwise process identifying specifying EBV list presented deliverable. We further provide summary characteristics identified...

10.3897/arphapreprints.e102530 preprint EN cc-by 2023-02-24
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