Results 31 to 40 of about 6,755 (184)

Integrating Indigenous knowledge and modern statistical approaches to model wildlife density based on animal track counts

open access: yesConservation Biology, EarlyView.
Abstract In multiuse areas outside formal protection, sustaining both wildlife and people is critical to wildlife conservation and coexistence efforts. Botswana's Kalahari hosts one of sub‐Saharan Africa’s largest unprotected areas supporting free‐ranging wildlife.
Marie‐Charlotte Gielen   +7 more
wiley   +1 more source

Soil management in Lepidium meyenii (maca) monoculture: trends and challenges for small farmers around Lake Chinchaycocha in the Andean highlands of Junin (Peru)

open access: yesFrontiers in Soil Science
IntroductionMonoculture is a significant concern due to its negative impact on soil quality, resource productivity, and agricultural sustainability, particularly in vulnerable communities.
Richard Solórzano-Acosta   +12 more
doaj   +1 more source

Hydropower Regulation of Xingu River Discharge Structures Heterogeneous, Sector‐Specific Responses in Pacu Fisheries Along the River Continuum

open access: yesFisheries Management and Ecology, EarlyView.
ABSTRACT Hydroelectric dams are common in Amazonian tributaries under federal environmental licensing that requires long‐term fisheries monitoring. This study evaluated three fishing systems targeting “pacu” species (Serrasalmidae) in the Xingu River before, during, and after construction of the Belo Monte dam (2012–2023) across four river sectors ...
João Paulo Moura de Queiroz   +5 more
wiley   +1 more source

Red meat and egg intake and serum ferritin concentrations in Colombian children: results of a population survey, ENSIN-2015

open access: yesJournal of Nutritional Science, 2020
The present study aimed to (a) establish the frequency of consumption of red meat and eggs; (b) determine serum ferritin levels (μg/l); and (c) establish the relationship between serum ferritin and the consumption of red meat and eggs. In Colombia during
Oscar F. Herran   +2 more
doaj   +1 more source

From Indicator to Prediction: Five Decades of Biochemical Oxygen Demand Research in Tropical Freshwaters

open access: yesWorld Water Policy, Volume 12, Issue 4, November 2026.
ABSTRACT Biochemical oxygen demand (BOD) remains a core indicator of organic pollution in freshwater monitoring, but its role in water policy and practice is changing as water‐quality assessment moves toward predictive, integrative, and decision‐support approaches.
Isadora Favero Roque Cenci   +5 more
wiley   +1 more source

Seasonal and Dietary Effects on the Hematobiochemical Parameters of Creole Goats in the Peruvian Andes

open access: yesVeterinary Sciences
Creole goats have adapted to the harsh Andean environment, yet the physiological impacts of high-altitude production systems remain underexplored. This study assessed seasonal and dietary influences on the hematological and biochemical profiles of 45 ...
Aníbal Rodríguez-Vargas   +7 more
doaj   +1 more source

Monitoreo ambiental rural. Serie Audiovisuales. Monitoreo ambiental y sistemas productivos

open access: yes, 2023
Fil: Zaccagnini, Maria Elena. Instituto Nacional de Tecnología Agropecuaria (INTA).
Medero, Silvina Laura   +1 more
openaire   +1 more source

Occupancy and Niche Dynamics of Iberian Freshwater Fish Across 25 Years

open access: yesAquatic Conservation: Marine and Freshwater Ecosystems, Volume 36, Issue 10, October 2026.
ABSTRACT Global change is reshaping biological communities, leading to shifts in community composition, species distributions and species realized niches. These processes are especially relevant in freshwater ecosystems, where vertebrate declines are particularly severe and dispersal is naturally constrained by drainage basins.
Carlos Cano‐Barbacil   +5 more
wiley   +1 more source

Separating Faces in ARMS Metabarcoding Improves Marine Biodiversity Monitoring: A Comparison Across Protocols, Experimental Designs and Photographic Surveys

open access: yesMolecular Ecology Resources, Volume 26, Issue 7, October 2026.
ABSTRACT Monitoring marine biodiversity requires approaches capable of capturing its spatial and temporal complexity. DNA metabarcoding coupled with Autonomous Reef Monitoring Structures (ARMS) is increasingly used for this purpose, yet most applications still pool all sessile fractions and rarely benchmark molecular outputs against photographic ...
Anne Chenuil   +22 more
wiley   +1 more source

Spatial Variability of Soil Acidity and Lime Requirements for Potato Cultivation in the Huánuco Highlands

open access: yesAgriculture
Soil acidity is a major limiting factor for potato production in Peru’s high Andean region. This study aims to predict the spatial variability of soil acidity as a fundamental tool for recommending site-specific liming treatments and to identify the ...
Kenyi Quispe   +5 more
doaj   +1 more source

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