نتایج جستجو برای: before harvest

تعداد نتایج: 497719  

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2016
Torben C Rick Leslie A Reeder-Myers Courtney A Hofman Denise Breitburg Rowan Lockwood Gregory Henkes Lisa Kellogg Darrin Lowery Mark W Luckenbach Roger Mann Matthew B Ogburn Melissa Southworth John Wah James Wesson Anson H Hines

Estuaries around the world are in a state of decline following decades or more of overfishing, pollution, and climate change. Oysters (Ostreidae), ecosystem engineers in many estuaries, influence water quality, construct habitat, and provide food for humans and wildlife. In North America's Chesapeake Bay, once-thriving eastern oyster (Crassostrea virginica) populations have declined dramaticall...

2014
Katherine R. Smith Laureen Barthman-Thompson William R. Gould Karen E. Mabry Cédric Sueur

The northern salt marsh harvest mouse (Reithrodontomys raviventris halicoetes) is an endangered species endemic to the San Francisco Bay Estuary. Using a conservation behavior perspective, we examined how salt marsh harvest mice cope with both natural (daily tidal fluctuations) and anthropogenic (modification of tidal regime) changes in natural tidal wetlands and human-created diked wetlands, a...

2009
Bruce M. S. Campbell

1 Fresh data on English grain yields 1268-1480 are combined with revised price series to measure the frequency and scale of serious harvest shortfalls and estimate the elasticity of demand for cereals. Major food availability declines are shown to have been a significant component of most historical subsistence crises, as back-to-back shortfalls were of the worst famines. Although farmers did a...

Journal: :Journal of Economic Behavior and Organization 2023

In-group bias can be detrimental for communities and economic development. We study the causal effect of financial constraints on in-group in prosocial behaviors – cooperation, norm enforcement, sharing among low-income rice farmers rural Thailand, who cultivate harvest once a year. use between-subjects design randomly assigning participants to experiments either before (more financially constr...

2009
Neala W Kendall Jeffrey J Hard Thomas P Quinn

Life history traits of wild animals can be strongly influenced, both phenotypically and evolutionarily, by hunting and fishing. However, few studies have quantified fishery selection over long time periods. We used 57 years of catch and escapement data to document the magnitude of and trends in gillnet selection on age and size at maturity of a commercially and biologically important sockeye sa...

2014
Scott E. Hygnstrom Stephen M. Vantassel Timothy R. Van Deelen David Drake

Dramatic growth in numbers of white-tailed deer (Odocoileus virginianus) and declines in hunter recruitment have challenged our ability to manage deer populations through traditional methods. We surveyed all state wildlife agencies and estimate the current abundance of white-tailed deer in North America exceeds 30 million. States currently are issuing record numbers of permits to hunters to inc...

2006
Howard J. Kilpatrick Andrew M. LaBonte John S. Barclay

Harvest data often are used to model deer (Odocoileus sp.) population growth and evaluate harvest strategies. Understanding factors that may influence harvest-reporting rates among methods of data collection is important in assessing the reliability of harvest data. Our objectives were to compare deer harvest-reporting rates over a 3-year period between mail-in archery-kill report cards (AKRC) ...

رونقی, عبدالمجید, شیخی, جمال, موسوی, سید مجید ,

A greenhouse experiment was conducted to evaluate the effect of vermicompost and sodium chloride (NaCl) on growth of spinach cv. Viroflay and some chemical properties of post-harvest soil. The greenhouse experiment was factorial, arranged in a completely randomized design with three replications. Treatments included three vermicompost levels (0, 1 and 2% w/w) and four salinity levels (0, 1, 2 a...

2015
Guy Landmann Laurent Saint-André Laurent Augusto lAurEnt sAint-AnDré

Laurent Augusto (INRA) presented the current state of knowledge on the relationship between forest management policies and the maintenance of soil fertility based on the results of the RESOBIO(1) project (Landmann & Nivet, 2014) which studied the management of harvesting residues and the preservation of soils and biodiversity. Laurent Saint-André (INRA) gave a special presentation on the manage...

2010
N. Gheţu Venera Mihaela Iliescu Daniela-Emanuela Gheţu V. I. Ilie V. G. Ilie M. Ionac G. Mihalache D. Pieptu

456 ENDOSCOPIC-ASSISTED HARVEST OF GRACILIS MUSCLE IN PIGS. A MODEL TO LEARN AND PRACTICE ENDOSCOPIC TECHNIQUES N. Gheţu, Venera Mihaela Iliescu, Daniela-Emanuela Gheţu, V.I. Ilie, V.G. Ilie, M. Ionac, G. Mihalache, D. Pieptu 1. “Gr. T. Popa” University of Medicine and Pharmacy, Center for Simulation and Training in Surgery, Iasi, Romania 2. “Victor Babes” University of Medicine and Pharmacy, ”...

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