Results 61 to 70 of about 71,161 (277)

The role of peat-forming bofedales in sustaining baseflow in the humid puna

Journal of Hydrology: Regional Studies, 2023
Study region: Humid puna of the Central Andes, Perú Study focus: Bofedales, or peat-forming wetlands, are a characteristic feature of the humid puna - a high elevation, seasonally dry grass- and shrub-land throughout the Central Andes.
Wyeth Wunderlich, Margaret Lang, Kristina Keating, Wilner Bandera Perez, Jasper Oshun   +4 more
doaj   +1 more source

Along the Silenced Footsteps of Latin American Pastoralists: From Mexico to Argentina, a Journey Through Pastoral Systems in Latin America

The Journal of Latin American and Caribbean Anthropology, Volume 31, Issue 1, March 2026.
ABSTRACT Pastoralism worldwide faces a complex landscape of increased pressures and exclusion. Beyond ecological and economic challenges, pastoralists suffer eroding cultural identity, limited generational renewal, and political marginalization. Yet pastoral livelihoods are increasingly recognized as stewards of sustainable futures and amongst the best
Greta Semplici, Pablo Manzano
wiley   +1 more source

The Miners of South America: Impacts of Climate Change on the Distribution of Geositta Miners Along Elevational Gradients

Biotropica, Volume 58, Issue 1, January 2026.
We modeled the current and future distributions of seven Geositta species along elevational gradients in South America under two climate change scenarios. Our results show that most species are projected to lose suitable habitats, particularly under the high‐emission scenario, with distinct responses between lowland and highland taxa.
Ricardo C. Meireles, Leonardo E. Lopes, Gustavo R. Brito, Ricardo Solar   +3 more
wiley   +1 more source

Factors Contributing to the Lack of Success in the Agricultural Cooperative Companies of Bushehr and Dashtestan Cities [PDF]

تعاون و کشاورزی, 2010
More than half a century has passed since agriculture cooperative companies were established, but still these companies cannot fulfill a role befitting a national economical section with importance and expansion as that of agriculture has not yet found ...
B Khafaie
doaj  

‘Dispersification’ of Agalinis (Orobanchaceae) Into South America Is Associated With Hummingbird Pollination and Perennial Life‐History Shifts

Journal of Biogeography, Volume 53, Issue 1, January 2026.
ABSTRACT Aim Several mechanisms contribute to the plant biodiversity of the Neotropics, with the highlands of South America serving as important hotspots of diversity. In particular, the Brazilian highlands exhibit high biodiversity due to complex diversification dynamics and a mixture of contributions from different biomes.
Pedro H. Pezzi, Pamela S. Soltis, Douglas E. Soltis, Maribeth Latvis   +3 more
wiley   +1 more source

Diversification and evolution of Hawaiian Megalagrion damselflies (Pinapinao, Odonata: Coenagrionidae) Ka Ho‘omāhuahua a me ke Kumu Ho‘omohala o nā Pinapinao Megalagrion o Hawai‘i (Odonata: Coenagrionidae)

Systematic Entomology, Volume 51, Issue 1, January‐March 2026.
The ancestor of today's pinapinao, Hawaiian Megalagrion damselflies, diverged from Ischnurinae around 51 MA and likely evolved for over 20 MA before colonizing the Northwestern Hawaiian Islands. An ancestor of Megalagrion colonized the Northwestern Hawaiian Islands and diversified into ecological niches with four new breeding habitats and two new gill ...
Robert K. Hadfield, Steve Jordan, Dan A. Polhemus, Laura N. Sutherland, Steven L. Peck, John C. Abbott, Paul B. Frandsen, Robert P. Guralnik, Vincent J. Kalkman, Jessica L. Ware, Seth M. Bybee   +10 more
wiley   +1 more source

Introduction of Food‐Based Cover Crops Reduces Weed Control Frequency, Improves Land Productivity, and Increases Income of Robusta Coffee Farms

Advances in Agriculture, Volume 2026, Issue 1, 2026.
Coffee (Coffea canephora) takes 2 to 3 years to begin yielding, during which period the young coffee plants do not fully occupy the land. Introduction of fast‐growing food crops during these early stages will help maximize land use, provide early income, improve soil health, reduce weed pressure, and moderate the microclimate.
Sampson Konlan, Jacob Danso, Alfred Arthur, Jerome Agbesi Dogbatse, Frank Owusu-Ansah, Evelyn Deladem Ahiale, Maame Adjoa Segbefia, Xinqing XIAO   +7 more
wiley   +1 more source

Actualización de la lista de pulgones (hemiptera: aphididae) de jujuy y salta. registro de cinara cupressi (buckton)

RIA: Revista Investigaciones Agropecuarias, 2006
Una prospección de pulgones se realizó en localidades de las provincias de Jujuy y Salta. De las 15 especies halladas, 8 resultaron ser nuevas para Jujuy y 5 para Salta, todas ellas de importancia agrícola o forestal. Cinara cupressi, importante plaga
J. Ortego
doaj  

Onko puna-apilassa potentiaalia ?

Suomen Maataloustieteellisen Seuran Tiedote, 2006
Puna-apilalla on biologisen typensidontakykynsä ansiosta keskeinen rooli luomutuotannossa. Samasta syystä sen kiinnostavuus tavanomaisena viljelykasvina todennäköisesti lisääntyy tulevaisuudessa typpilannoitteiden kallistuessa energian hinnan nousun myötä. Puna-apilan viljelyvarmuutta pidetään kuitenkin tunnetusti heinäkasveja heikompana.
Vanhatalo, Aila, Jaakkola, Seija
openaire   +3 more sources

Effects of a Weekend‐Long Field Course on Undergraduates' Confidence, Identity, and Belonging

Ecology and Evolution, Volume 15, Issue 12, December 2025.
This study demonstrates that even a short, weekend‐long field course can significantly enhance undergraduate students' research identity, research confidence, and sense of belonging. By showing that short, low‐barrier experiences can produce meaningful outcomes, this work highlights an equitable model for expanding access to field experiences in ...
Holly C. White, Katharine J. Ruskin, Debra M. Allen, Kayla B. McLagan, Sarah J. Nelson, Alison Jolley   +5 more
wiley   +1 more source