Results 251 to 260 of about 23,995 (279)

Temporal diversification of Mesoamerican cichlid fishes across a major biogeographic boundary

Molecular Phylogenetics and Evolution, 2004
The Mexican Neovolcanic Plateau sharply divides the vertebrate fauna of Mesoamerica where the climate of both the neotropics and temperate North America gradually blend. Only a few vertebrate groups such as the Heroine cichlids, distributed from South America to the Rio Grande in North America, are found both north and south of the Neovolcanic Plateau.
C, Darrin Hulsey, Francisco J, García de León, Yara, Sánchez Johnson, Dean A, Hendrickson, Thomas J, Near   +4 more
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Widespread misperception about a major East Asian biogeographic boundary exposed through bibliographic survey and biogeographic meta‐analysis

Journal of Biogeography, 2021
AbstractAimThe Watase line, a major biogeographic boundary between Palearctic and Oriental realms in East Asia, is generally drawn between Akuseki and Kodakara Islands of the Northern Ryukyu archipelago, Japan. However, no evidence can be found to support the positioning of the boundary between these two tiny volcanic islands.
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Biogeographical boundaries and Monmonier’s algorithm: a case study in the northern Neotropics

Journal of Biogeography, 2007
AbstractAim To use Monmonier’s algorithm, a spatially explicit technique, to elucidate positions of biogeographical boundaries in the northern Neotropics.Location The northern Neotropics (Isthmus of Tehuantepec, Mexico, south to trans‐Andean Colombia).Methods We compiled avifaunal lists for 36 forested sites from the literature, museum records, field ...
Michael A. Patten, Brenda D. Smith‐Patten   +1 more
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Rethinking the Palearctic-Oriental Biogeographic Boundary in Quaternary China

2010
This paper reviews the Chinese Quaternary biogeographic record, which has traditionally been divided into the Palearctic (North China) and Oriental (South China) biozones. Notable findings are: (1) Open-steppe taxa (e.g., Equus sanmeniensis, E. yunnanensis, E. hemonius, Mammuthus) are found in the Oriental region during the Early and Late Pleistocene; (
Christopher J. Norton, Changzhu Jin, Yuan Wang, Yingqi Zhang   +3 more
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Transition boundaries for protistan species turnover in hypersaline waters of different biogeographic regions

Environmental Microbiology, 2017
Summary The identification of environmental barriers which govern species distribution is a fundamental concern in ecology. Even though salt was previously identified as a major transition boundary for micro‐ and macroorganisms alike, the salinities causing species turnover in protistan communities are unknown.
Sabine, Filker, Dominik, Forster, Lea, Weinisch, Merit, Mora-Ruiz, Bernardo, González, María Eugenia, Farías, Ramon, Rosselló-Móra, Thorsten, Stoeck   +7 more
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Global Coastal Biogeographic Boundaries: Unveiling the Nature of Processes Shaping the Distribution of Marine Biodiversity

Diversity and Distributions
ABSTRACT Aim Identify biogeographic boundaries that delineate the distribution of species assemblages along global non‐insular coastlines, characterise the potential barriers responsible for biogeographic boundaries and realign coastal biogeographic provinces.
Everton Giachini Tosetto, Matthieu Lengaigne, Sigrid Neumann-Leitao   +2 more
exaly   +3 more sources

Biogeographic control of trilobite mass extinction at an Upper Cambrian “biomere” boundary

Paleobiology, 1987
Extinctions at the top of the Sunwaptan Stage (=“Ptychaspid Biomere”) near the Cambrian-Ordovician boundary eliminated about half of North American trilobite families. The families that extend from the shelf into the upper slope show significantly higher survival than those confined to the shelf. Biofacies and lithofacies distribution patterns indicate
Stephen R. Westrop, Rolf Ludvigsen
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Mammal species richness and biogeographic structure at the southern boundaries of the Nearctic region

Mammalia, 2014
AbstractWe analyzed whether the spatial variation in mammal species richness reflects the southern boundaries of the Nearctic region as previously established by endemism patterns. Records from 710 mammal species were drawn on a map of North America (from Canada and Alaska to Panama) gridded at 4° latitude-longitude. We evaluated the probable existence
Escalante, Tania, Rodríguez-Tapia, Gerardo, Linaje, Miguel, Morrone, Juan J., Noguera-Urbano, Elkin   +4 more
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Early Cambrian provincialism and biogeographic boundaries in the North Atlantic region

Lethaia, 1979
Early Cambrian lithofacies and their stratigraphic context, characteristic of a number of tectonic elements within the North Atlantic region, are interpreted with respect to depositional environment and related trilobite provincialism. Faunas of the North American province are typically indigenous to shallow, warm water on a sand-carbonate shelf on the
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Biogeographic patterns of lichens and trees on islands of the Boundary Waters Canoe Area Wilderness

BIOS, 2012
Different biogeographic factors may influence the richness of lichen and tree assemblages found on islands within boreal lakes. To examine the relative importance of island area, insularity and habitat for shaping these richness patterns, we surveyed lichen and tree species on islands of the Boundary Waters Canoe Area Wilderness in northern Minnesota ...
Sarah Ames, Kate Pischke, Nicholas Schoenfuss, Zachary Snobl, Jessica Soine, Evan Weiher, Todd Wellnitz   +6 more
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