Results 31 to 40 of about 748 (132)

Habitat Changes at the Local Scale Have Major Impacts on Waterfowl Populations Across a Migratory Flyway

Global Change Biology, Volume 30, Issue 12, December 2024.
Migratory waterbirds are declining worldwide due to habitat loss, but not much is known about how the loss of specific wetlands can affect waterbird populations at the biogeographical scale. To investigate that, we used the Guadalquivir Marshes (SW Spain) as a case study and combined 38 years of waterfowl winter counts with environmental and remote ...
Miguel de Felipe, Juan A. Amat, José Luis Arroyo, Rubén Rodríguez, Carmen Díaz‐Paniagua   +4 more
wiley   +1 more source

La sombra alargada del patrón: Gamonalismo y hábitos hacendatarios en Chimborazo tras la reforma agraria

The Journal of Latin American and Caribbean Anthropology, Volume 29, Issue 4, Page 352-363, December 2024.
Abstract This paper explores selective aspects of the historical processes of organization of the kichwa peasantry in the Andes of Ecuador. Based on the analysis of two representative cases of confrontation between peasants and landowners over access to land in the province of Chimborazo, it discusses the relevance of the concept of “gamonalismo” as ...
Víctor Bretón
wiley   +1 more source

Rent–wage inequality in Mexico City, 1770–1930

The Economic History Review, Volume 77, Issue 3, Page 1035-1056, August 2024.
Abstract This article traces trends of income inequality in Mexico City from 1770 to 1930 by measuring the gaps between urban real estate rents and unskilled wages. The article presents the first long‐term series of real estate values and rental income for Mexico.
Amílcar E. Challú, Israel García Solares, Aurora Gómez‐Galvarriato   +2 more
wiley   +1 more source

Dinámica de la fuerza de trabajo en Cuba (1846-1931).

Novedades en Población, 2013
Este artículo forma parte de una investigación mayor que estudia la actividad laboral de la población cubana en el periodo de 1846-1931, mediante el procesamiento de los datos estadísticos correspondientes a los censos de 1846, 1862, 1899, 1907, 1919 y ...
Orestes Gárciga Gárciga
doaj  

A rising tide that lifts all boats: Long‐term effects of the Alaska Permanent Fund Dividend on poverty

Poverty &Public Policy, Volume 16, Issue 2, Page 126-145, June 2024.
Abstract Although not designed as a social program to redistribute income, the Alaska Permanent Fund Dividend (PFD) has been reducing poverty by providing equal annual payments to nearly all state residents for over 40 years. We examine direct effects of the PFD on Alaska poverty rates since 1990, using US Census and American Community Survey Public ...
Matthew Berman
wiley   +1 more source

Blind shots: non‐natural mortality counteracts conservation efforts of a threatened waterbird

Animal Conservation, Volume 27, Issue 3, Page 293-307, June 2024.
The assessment of the marbled teal population reinforcement programme in Spain carrying out releases of captive‐bred birds showed that 60% of the mortality is due to non‐natural causes, mostly illegal shooting. To establish a self‐sustaining population, non‐natural mortality should be reduced by 40% and management measures such as prosecution of ...
J. M. Pérez‐García, E. Sebastián‐González, R. Rodríguez‐Caro, A. Sanz‐Aguilar, F. Botella   +4 more
wiley   +1 more source

Conocer el pasado para imaginar futuros: dinámica y estructura de los hogares en Argentina a partir de datos censales

Revista Latinoamericana de Metodología de las Ciencias Sociales
El artículo examina las continuidades y rupturas metodológicas en los censos de población argentinos modernos y sus consecuencias en la construcción de series temporales de indicadores clave para las proyecciones de hogares.
Matías Scialabba, Mariana Marcos
doaj   +1 more source

How many common cranes (Grus grus) winter in Spain and Portugal? [PDF]

Munibe Ciencias Naturales
The Iberian Peninsula, i.e., Spain and Portugal, is one of the most important wintering areas of common cranes (Grus grus), accounting for 50% of the European winter population. Historical winter censuses have never managed to provide a complete picture,
Kees Woutersen
doaj   +1 more source

An expert‐based system to predict population survival rate from health data

Conservation Biology, Volume 38, Issue 1, February 2024.
Abstract Timely detection and understanding of causes for population decline are essential for effective wildlife management and conservation. Assessing trends in population size has been the standard approach, but we propose that monitoring population health could prove more effective.
Lori H. Schwacke, Len Thomas, Randall S. Wells, Teresa K. Rowles, Gregory D. Bossart, Forrest Townsend Jr., Marilyn Mazzoil, Jason B. Allen, Brian C. Balmer, Aaron A. Barleycorn, Ashley Barratclough, Louise Burt, Sylvain De Guise, Deborah Fauquier, Forrest M. Gomez, Nicholas M. Kellar, John H. Schwacke, Todd R. Speakman, Eric D. Stolen, Brian M. Quigley, Eric S. Zolman, Cynthia R. Smith   +21 more
wiley   +1 more source

Las economías de las zonas metropolitanas de México en los albores del siglo xxi

Estudios Demográficos y Urbanos, 2013
En este texto se revisa la evolución reciente de las zonas metropolitanas en México. Se presentan elementos de discusión teórica y conceptual acerca de la visión económica del fenómeno metropolitano y se describe la conformación y estructuración del ...
Alejandra Trejo Nieto
doaj