Results 51 to 60 of about 3,767 (120)

An Isotope‐Based Snapshot Reveals the Combined Influence of High‐Elevation Recharge and Local Return Flows on Groundwater Across Guatemala City

open access: yesHydrological Processes, Volume 40, Issue 6, June 2026.
Representation (not to scale) of potential high elevation recharge and low elevation return flows within the Guatemala City metropolitan area. ABSTRACT Guatemala City is the most populous urban center in Central America. In this urban center, groundwater extraction within the last 40 years has substantially declined water table levels and accelerated ...
Ricardo Sánchez‐Murillo   +3 more
wiley   +1 more source

Varied motivations for secondary forest reclearing among landholders make forest persistence challenging

open access: yesPeople and Nature, Volume 8, Issue 6, Page 1943-1956, June 2026.
Abstract Remote sensing studies show that ephemeral forest regeneration is widespread in the tropics, limiting the climate and biodiversity benefits from net increases in forest cover. Socioeconomic, biophysical and landscape variables can help explain the spatial distribution of reforestation reversals.
Francis H. Joyce
wiley   +1 more source

Sustainable Livestock Decisions in a Post‐Conflict Frontier: Evidence From Colombia's Orinoquía

open access: yesJournal of Agricultural Economics, Volume 77, Issue 2, Page 304-319, June 2026.
ABSTRACT The Orinoquía region is one of Colombia's principal agricultural frontiers and has been shaped by long‐standing armed‐conflict dynamics that continue to influence land governance, producer incentives, and investment decisions. Efforts to promote sustainable cattle production emphasize two key practices: sustainable pasture management ...
Hernando Flórez‐Díaz   +4 more
wiley   +1 more source

Intoxicação por organoclorados (endosulfan) em bovinos no Uruguai

open access: yesPesquisa Veterinária Brasileira, 2011
Descreve-se um surto de intoxicação por organoclorados (Endosulfan) em bovinos ocorrido em abril de 2009, em uma propriedade de recria de bezerros localizada no departamento de Paisandú, Uruguai.
R. Rivero   +3 more
doaj   +1 more source

Calibration of the species threat abatement and restoration metric's threat abatement component in a Costa Rican landscape

open access: yesConservation Biology, Volume 40, Issue 3, June 2026.
Abstract Achieving global conservation policy goals requires the ability to set and measure progress toward science‐based targets for biodiversity. The species threat abatement and restoration (STAR) metric was developed to enable actors to set science‐based targets for species.
Louise Mair   +17 more
wiley   +1 more source

A comparison of Criollo and Suffolk ewes for resistance to Haemonchus contortus during the periparturient period

open access: yesJournal of Applied Animal Research, 2018
Criollo and Suffolk ewes were compared for resistance to an experimental infection with Haemonchus contortus in the periparturient period. Measures on days −28, −14, 0 (lambing date), 14, 28, and 42 were taken on number of eggs per gram of faeces (EPG ...
Eliseo Romero-Escobedo   +5 more
doaj   +1 more source

Feed efficiency and the liver proteome of fattening lambs are modified by feed restriction during the suckling period

open access: yesAnimal, 2018
The present study was designed to describe the effects of early feed restriction of Merino lambs on feed efficiency during the fattening period by examining ruminal microbiota and fermentation parameters, gastrointestinal morphology, digestibility or ...
A. Santos   +7 more
doaj   +1 more source

Mexican Freshwater Fish: Identifying Conservation Priorities and High‐Risk Areas for Fisheries Under Climate Change

open access: yesAquatic Conservation: Marine and Freshwater Ecosystems, Volume 36, Issue 5, May 2026.
ABSTRACT Freshwater fish are essential components of aquatic ecosystems, providing key ecological functions and supporting livelihoods. Climate change poses a significant threat to freshwater biodiversity; consequently, both its conservation and the food security it sustains may be at risk.
Rafael Sebastián Muratalla‐Miranda   +3 more
wiley   +1 more source

CAMBIO DE PESO DE TORETES EN PASTOREO EN EL TROPICO: RESPUESTA A SUPLEMENTACION CON BLOQUE MULTINUTRICIONAL

open access: yesEcosistemas y Recursos Agropecuarios, 2014
El objetivo de este estudio fue evaluar la respuesta en cambio de peso vivo de toretes pastoreando estrella africana (Cynodon plectostachyus) y suplementados con bloque multinutricional en condiciones tropicales mexicanas, durante 90 d.
H Mijares-López   +4 more
doaj   +1 more source

Telomere Length Is Determined by Intrinsic Factors and Is Shortened During Drought Years in Gallotia galloti

open access: yesEcology and Evolution, Volume 16, Issue 5, May 2026.
Telomere dynamics in ectotherms remain poorly understood relative to endotherms, yet are increasingly relevant in the context of climate change. Here, we used model‐averaged GLMMs and hierarchical partitioning to disentangle intrinsic and extrinsic drivers of relative telomere length in the Western‐Canaries Lizard (Gallotia galloti) across a 10‐year ...
Edward Gilbert   +9 more
wiley   +1 more source

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