WALTERS, L.J.*; ABGRALL, M.J.: Impact of Drift Species (Gracilaria compressa, Zoobotryon verticillatum) on the Recruitment and Fitness of Sessile Invertebrates Mosquito Lagoon is the northern-most estuary in the Indian River Lagoon system. Here, large, dislodged masses of macroalgae and the bryozoan Zoobotryon verticillatum can be found drifting in the water at varying times throughout the […]

WILLIAMS. J.*; BIESIOT, P.M.: Fatty Acid Profiles Associated with Diapause Egg Production in Two Species of Freshwater Calanoid Copepods The copepods Aglaodiaptomus (= Diaptomus) stagnalis and A. clavipoides co-occur in certain ephemeral ponds. Both species hatch from diapause (resting) eggs when pond sediments are freshly inundated and mature rapidly to adults. Both are believed to […]

MORRIS, D. W.*; KINGSTON, S. R.: Using adaptive habitat selection to predict future threats to biodiversity. We test an intriguing postulate. Can one use the adaptive selection of habitat by humans to forecast future threats to biodiversity? The answer appears to be yes. World Resources Institute (WRI) data demonstrate that humans select urban over rural […]

PORTER, Marianne/E; KEARSLEY, Mike: Near-shore vegetation responses to experimental flows in Grand Canyon We examine the responses of four clonal herbaceous species and a dominating exotic to a three-month experimental low steady flow on the Colorado River through Grand Canyon. Plant density, soil moisture, soil texture, and soil temperature data were collected on transects from […]

VREDENBURG, V T: Exotic species and the decline of amphibians: unintended consequences on a global scale. A puzzling aspect of amphibian declines is that amphibians, particularly frogs, have been declining even in large protected areas. These habitats are generally thought to be relatively unaltered and undisturbed. However, the introduction of nonnative fish is a common […]

GOBALET, K. W.: Archaeological Evidence for Steelhead Oncorhynchus mykiss in the Coastal Streams of California from San Francisco to Mexico Southern populations of salmon and trout (family: Salmonidae) are in dramatic decline. Conservation and legal issues surround whether or not salmon and trout are native to coastal streams of California. Since authoritative surveys of the […]

WILLIAMSON, C.A.*; MARKS, J.C.; HENDRICKSON, D.A.; SWANSON, B.O.: Aliens invade Mexico: proof of their impact on native cichlids The basin of Cuatro Ciénegas, with over 200 springs and pools, lies in the Chihuahuan desert of northern Mexico. The area is a high priority conservation site with many endemic fishes and mollusks. Although geographically isolated, the […]

SHEARER, Tonya L; COFFROTH, Mary Alice; University at Buffalo; University at Buffalo: Population structure and gene flow of Caribbean scleractinian corals as determined by microsatellite markers. Investigations of gene flow and genetic structure of scleractinian coral populations have commonly utilized analyses of allozyme markers that reveal only a limited amount of the total genetic variation […]

KNOTT, K.E.*; PUURTINEN, M.; KAITALA, V.; University of Jyv�skyl�, Finland; University of Jyv�skyl�, Finland; University of Jyv�skyl�, Finland: Mating systems in populations of the hermaphroditic snail Lymnaea stagnalis The aquatic snail Lymnaea stagnalis is a simultaneous hermaphrodite capable of both self and cross fertilization. In order to determine the mating system in natural populations of […]

HARPER, F.M.*; HART, M.W.; Dalhousie Univ, Halifax, NS; Dalhousie Univ, Halifax, NS: In vitrohybridization of the seastars Asterias forbesiand A. rubens Zones of secondary contact for sibling species provide natural environments to study speciation and mechanisms of pre- and post-zygotic reproductive isolation. The Gulf of Maine extending into the Bay of Fundy is a secondary […]