Papers by William McLarney
24 ref. Sum. (En,Es)Debido al avance de la deforestaci?n, los agroecosistemas se convierten en el... more 24 ref. Sum. (En,Es)Debido al avance de la deforestaci?n, los agroecosistemas se convierten en elementos claves para la conservaci?n de la biodiversidad. Los cacaotales, por su estructura boscosa, son una herramienta valiosa para este prop?sito, especialmente en zonas de amortiguamiento de ?reas protegidas. El dise?o y manejo de los ?rboles de sombra del cacao determina en gran medida el valor del cacaotal para conservar y manejar la biodiversidad. Los estudios demuestran que la diversidad de aves, mam?feros no voladores y artr?podos presentes en los cacaotales adyacentes a zonas boscosas es similar a la de los bosques naturales y mucho mayor que la de los agroecosistemas manejados intensivamente. En este art?culo se hacen algunas recomendaciones para incrementar la biodiversidad en cacaotales y se proponen incentivos para el desarrollo de una producci?n cacaotera amigable con la biodiversidad
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We conducted 600 ten-minute, fixed radius point counts in two climatically different seasons in f... more We conducted 600 ten-minute, fixed radius point counts in two climatically different seasons in forest, abandoned cacao (Theobroma cacao), and managed cacao habitat from
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Fisheries, 2007
There are ever so many reasons to question dam proposals in developing countries. Issues of socia... more There are ever so many reasons to question dam proposals in developing countries. Issues of social justice and indigenous rights are often raised. Shaky economic assumptions are frequently exposed. The ecological damage is well-documented. an endless list of site-specific issues can arise—for example, the submergence of archaeological resources of the Rio usumacinta watershed in Guatemala and Mexico or the Ilisu valley in Turkey should proposed dams go forward. but there is only one issue that applies across the board, to every dam ever proposed: all dams act as barriers to the movement of aquatic animals, and “fish ladder” type technology is, at best, a partial solution. No discussion of any dam scheme is complete without an assessment of which species of fish and other aquatic creatures need to move up and down the river past the dam site. Yet, except in those cases involving highprofile commercial or recreational fisheries, this issue often goes unremarked. No dam assessment is c...
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While the essence of this report is predictive, throughout it we will implicitly invoke the Preca... more While the essence of this report is predictive, throughout it we will implicitly invoke the Precautionary Principle. Knowledge of the biology of the species and ecosystems involved is extremely limited, a factor which should incline all concerned to take a very conservative approach to any proposed major alterations to the landscape. We can be certain that the biological effects of
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Conservation Biology, 1993
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Canadian Journal of Fisheries and Aquatic Sciences
Anthropogenic impacts on the landscape can drive biotic homogenization whereby distinct biologica... more Anthropogenic impacts on the landscape can drive biotic homogenization whereby distinct biological communities become more similar to one another over time. Land-use change in the Southern Appalachian region of the United States is expected to result in homogenization of the highly diverse freshwater fish communities as in-stream habitat alterations favor widespread cosmopolitan species at the expense of more narrowly distributed highland endemic species. We compiled four datasets spanning 25 years to (1) evaluate the effects of environmental factors on relative abundance and richness of highland endemic vs. cosmopolitan species in this region and (2) test for taxonomic homogenization, measured as a change in beta diversity over time. We found that several environmental factors differentially affected highland endemic and cosmopolitan species, with the proportion of forested land cover in a watershed most strongly predicting higher relative abundance and richness of highland endemic...
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Biology, Ecology, Fisheries, 2016
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Http Dx Doi Org 10 1577 1548 865997 46 Shamvi 2 0 Co 2, Jan 9, 2011
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Bulletin of Marine Science Miami, Aug 31, 1997
Abstract: We examined 1,469 tarpon ranging 102-2,045 mm fork length (FL) that were collected in S... more Abstract: We examined 1,469 tarpon ranging 102-2,045 mm fork length (FL) that were collected in South Florida waters and 217 tarpon ranging 880-1,860 mm FL that were collected in Costa Rican waters from 1989 to 1994. Among the Florida tarpon, gonads of ...
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Revista de biología tropical, 1996
The leatherback turtle was studied in Gandoca, an important nesting beach on the southeastern Car... more The leatherback turtle was studied in Gandoca, an important nesting beach on the southeastern Caribbean coast of Costa Rica (82 degrees 37' W; 09 degrees 37' N). In 1994, a total of 530 nests was recorded during the nesting season (February/July) and 160 leatherbacks were tagged; five were remigrants from the 1992 season and 15 carried tags from elsewhere. Eighty eight females only nested once. Mean curve carapace measurements were length 153.8 cm and width 112.0 cm. A hatchery received 82 clutches, with 6277 normal eggs. Their mean incubation period was 62.24 days (range: 56-68 days). Average hatching rate was 55.10% (S.D.: 25.04, range 15-96%). Extensive erosion, beach debris and poaching activity represent the main hazards for nesting in Gandoca.
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Transactions of the American Fisheries Society, 1968
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Aquaculture, 1974
... Amsterdam - Printed in The Netherlands A NEW METHOD FOR CULTURING CHIRONOMUS TENTANS FABRICIU... more ... Amsterdam - Printed in The Netherlands A NEW METHOD FOR CULTURING CHIRONOMUS TENTANS FABRICIUS LARVAE USING BURLAP SUBSTRATE IN FERTILIZED POOLS WILLIAM O. McLARNEY, SHELLY HENDERSON and ... (1973) who have fed grey mullet (Mugil ...
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Global ecology and biogeography : a journal of macroecology, 2018
The BioTIME database contains raw data on species identities and abundances in ecological assembl... more The BioTIME database contains raw data on species identities and abundances in ecological assemblages through time. These data enable users to calculate temporal trends in biodiversity within and amongst assemblages using a broad range of metrics. BioTIME is being developed as a community-led open-source database of biodiversity time series. Our goal is to accelerate and facilitate quantitative analysis of temporal patterns of biodiversity in the Anthropocene. The database contains 8,777,413 species abundance records, from assemblages consistently sampled for a minimum of 2 years, which need not necessarily be consecutive. In addition, the database contains metadata relating to sampling methodology and contextual information about each record. BioTIME is a global database of 547,161 unique sampling locations spanning the marine, freshwater and terrestrial realms. Grain size varies across datasets from 0.0000000158 km (158 cm) to 100 km (1,000,000,000,000 cm). BioTIME records span fr...
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Papers by William McLarney