Results 31 to 40 of about 2,866 (170)

Street‐Level Institutional Work: How Social Workers Maintain, Disrupt, and Create the Rules of Social Organizations

open access: yesEuropean Policy Analysis, Volume 12, Issue 2, Spring 2026.
ABSTRACT Research has shown that street‐level workers may shape public policies, yet less is known about the processes through which they attempt to influence institutional arrangements. This gap is particularly evident in corporatist welfare states, where multiple organizations are involved in social policy implementation.
Olivia Mettang
wiley   +1 more source

Trophic ecology of the freshwater prawn, Pseudopalaemon bouvieri (Decapoda: Palaemonidae) in Northeastern Argentina: with remarks on population structure

open access: yesRevista de Biología Tropical, 2012
Freshwater decapod crustaceans are important components of food webs in these environments, but little is known about the diet of species that live in tropical waters. We studied the feeding ecology of the prawn Pseudopalaemon bouvieri and its population
Romina Patricia Carnevali   +2 more
doaj   +2 more sources

Estructura poblacional de Polythore gigantea (Odonata: Polythoridae) en sistemas lóticos con diferentes estados de conservación en Antioquia, Colombia Population structure of Polythore gigantea (Odonata: Polythoridae) in lotic systems with different conservation states in Antioquia-Colombia

open access: yesRevista de Biología Tropical, 2012
Evaluar si el estado de conservación de algunos sistemas lóticos, se relaciona con algunas variables demográficas de P. gigantea puede ser un modelo útil para el monitoreo ecológico. Se evaluó la estructura poblacional de P.
Mariano Altamiranda-S, Oscar Ortega-M
doaj  

BIOLOGÍA REPRODUCTIVA DEL BOCACHICO Prochilodus magdalenae (PROCHILODONTIDAE) EN EL RÍO SAN JORGE, COLOMBIA

open access: yesActa Biológica Colombiana, 2020
Se estudió la biología reproductiva del Bocachico, Prochilodusmagdalenae, en el río San Jorge, Colombia. La especie es un pez con proporción sexual hembra: macho de 1,2:1, diferente a lo esperado.
María Alejandra Doria-González   +3 more
doaj   +1 more source

Community‐level effects of Müllerian mimicry on pollinator diversity and functioning

open access: yesFunctional Ecology, Volume 40, Issue 3, Page 599-610, March 2026.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Müllerian mimicry, a mutualistic interaction in which harmful species evolve similar warning signals, is often accompanied by niche divergence among mimetic species. While these aspects have traditionally been studied in an evolutionary context, their community‐level ...
Paola Laiolo, José Ramón Obeso
wiley   +1 more source

Activity and population characteristics of Andean Condors in southern Chile Actividad y características poblacionales de los Cóndores Andinos en el sur de Chile

open access: yesRevista Chilena de Historia Natural, 2000
Data were collected on general activity patterns and population characteristics of free-ranging Andean Condors Vultur gryphus in Torres del Paine National Park, Chile from July 1992 to June 1994 during 3,680 h of observation.
RONALD J. SARNO   +2 more
doaj  

Long‐term trends of epibionts reflect Mediterranean striped dolphin abundance shifts caused by morbillivirus epidemics

open access: yesJournal of Animal Ecology, Volume 95, Issue 3, Page 553-569, March 2026.
This original research piece demonstrates, through empirical and theoretical modelling approaches, that the epibionts of striped dolphins indicate dolphin abundance shifts caused by epidemics of dolphin morbillivirus (DMV). In addition, we provide the first SIR model to investigate the epidemiology of DMV in western Mediterranean striped dolphins ...
Sofía Ten   +4 more
wiley   +1 more source

Biología reproductiva del Liso (Rhamdia quelen) en el río Sinú, Colombia

open access: yesActa Biológica Colombiana, 2010
Se estudió la biología reproductiva del Liso (Rhamdia quelen) en el río Sinú. Los individuos fueron colectados entre enero y diciembre 2005, con tallas y pesos entre 15,5-37,0 cm de longitud total (LT) y 28,0-486,0 g de peso total.
Charles William Olaya Nieto   +2 more
doaj  

Reproducción del pez erizo, Diodon holocanthus (Pisces: Diodontidae) en la plataforma continental del Pacífico Central Mexicano

open access: yesRevista de Biología Tropical, 2011
Diodon holocanthus es una especie con cierta importancia comercial y ecológica en la comunidad de peces que forma la fauna de acompañamiento del camarón en la plataforma continental del Pacífico central Mexicano, y de la cual no se conocen aspectos ...
Gabriela Lucano-Ramírez   +4 more
doaj   +2 more sources

Drought reduces the value of both artificial and natural wetlands for gulls breeding in the Mediterranean region

open access: yesJournal of Applied Ecology, Volume 63, Issue 3, March 2026.
The importance of artificial wetlands for waterbird conservation can be easily overestimated from count data alone. The value of extensive fish ponds as a breeding habitat depends on maintaining the availability of natural marshes as a foraging habitat. This requires reducing impacts from groundwater extraction. Given recent abandonment of aquaculture,
Yingjun Wang   +5 more
wiley   +1 more source

Home - About - Disclaimer - Privacy