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Full-Text Articles in Life Sciences
Feeding Performance In Hawaiian Stream Goby Fishes: Morphological And Functional Analysis, Takashi Maie
Feeding Performance In Hawaiian Stream Goby Fishes: Morphological And Functional Analysis, Takashi Maie
All Theses
Distributions of Hawaiian stream fishes are typically interrupted by waterfalls that divide streams into lower and upper segments. Larvae hatched upstream are flushed into the ocean, and must climb these waterfalls to reach adult habitats when returning back to freshwater as part of an amphidromous life cycle. Stream surveys and studies of climbing performance show that Lentipes concolor can reach fast-flowing upper stream segments, but that Awaous guamensis reaches only slower, lower stream segments. Gut content analyses for these two species indicate that diet differs between them only by 10% or less dry weight for most major components (mostly green …
Importance Of Early Successional Forest For Wildlife In Southern New England, Amy Wynia
Importance Of Early Successional Forest For Wildlife In Southern New England, Amy Wynia
Senior Honors Projects
Many bird species that require early successional forest are declining in the Northeast U.S. because such habitat is relatively rare and when they inhabit the more common mature forests or suburban areas they are less successful. Early successional forest is maintained by regular disturbance (wind, fire, clear-cutting, and flooding) which has been happening less frequently during the past 50 years. Bird species that have declined during this time and which inhabit early successional forest include ruffed grouse (Bonasa umbellus), blue jay (Cyanocitta cristata), chestnut-sided warbler (Dendroica pensylvanica), gray catbird (Dumetella carolinensis), field sparrow (Spizella pusilla), golden-winged warbler (Vermivora chrysoptera), eastern …
Spatial And Temporal Dynamics Of Land Use Impacts On Water Quality In Watershed Systems, Olga Tsvetkova
Spatial And Temporal Dynamics Of Land Use Impacts On Water Quality In Watershed Systems, Olga Tsvetkova
Masters Theses 1911 - February 2014
ABSTRACT SPATIAL AND TEMPORAL DYNAMICS OF LAND USE IMPACTS ON WATER QUALITY IN WATERSHED SYSTEMS SEPTEMBER 2007 OLGA TSVETKOVA, B.S., NOVGOROD STATE UNIVERSITY, RUSSIA M.S., UNIVERSITY OF MASSACHUSETTS AMHERST Directed by: Professor Timothy O. Randhir Predicting land use change and assessing watershed tradeoffs between the watershed system components through system simulation helps to determine future nutrient and sediment load reductions needed to obtain a particular water quality standard. This also helps to examine the tradeoffs among nutrient and sediment load reductions that achieve the same water quality objective. Tradeoff assessment is a useful tool to meet agricultural and urban needs …
Contributions To The Chiroptera Of Mongolia With First Evidences On Species Communities And Ecological Niches, Dietrich Dolch, Nyamsuren Batsaikhan, Klaus Thiele, Frank Burger, Ingo Scheffler, Andreas Kiefer, Frieder Mayer, Ravčigijn Samjaa, Annegret Stubbe, Michael Stubbe, Leonard Krall, Dirk Steinhauser
Contributions To The Chiroptera Of Mongolia With First Evidences On Species Communities And Ecological Niches, Dietrich Dolch, Nyamsuren Batsaikhan, Klaus Thiele, Frank Burger, Ingo Scheffler, Andreas Kiefer, Frieder Mayer, Ravčigijn Samjaa, Annegret Stubbe, Michael Stubbe, Leonard Krall, Dirk Steinhauser
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
In this paper are presented the accounts of 13 identified bat species from a total of 628 captured specimens from 32 locations in Mongolia during three field expeditions. These species accounts include taxonomical, morphological, and ecological data resulting from observations and further analyses. As a result of this work the distribution of some bat species in Mongolia can be drawn in more detail. For instance, Vespertilio murinus is much wider distributed and abundant than the former records indicate. The Plecotus species were clearly identified by genetic analyses combined with morphological characteristics. Moreover, the second record for Eptesicus serotinus and the …
Ecology And Morphological Comparison Between Rough Greensnakes (Opheodrys A. Aestivus) And Eastern Smooth Greensnakes (Opheodrys V. Vernalis) In West Virginia, Timothy Earl Baldwin
Ecology And Morphological Comparison Between Rough Greensnakes (Opheodrys A. Aestivus) And Eastern Smooth Greensnakes (Opheodrys V. Vernalis) In West Virginia, Timothy Earl Baldwin
Theses, Dissertations and Capstones
Since 1971, documented Rough Greensnake (Opheodrys aestivus) occurrences in West Virginia have declined from approximately 100 to less than 20 occurrences in the last 10 years. In contrast to the decline of Rough Greensnakes in WV, Smooth Greensnake (O. vernalis) populations appear to be stable over the same period of time. Historic sites from the West Virginia Biological Survey were cross referenced with habitat descriptions in published literature to establish research locations. One hundred nineteen Rough and Smooth Greensnakes were measured for snout-vent length and total body length, and of these, 78 were measured in detail for external head morphology …