Amphibians Blanchard's Cricket Frog ( Acris crepitans blanchardi ) This small frog is a state species of special concern. It is rarely seen far from water, and prefers the open or sparsely vegetated mudflats on the margins of permanent wetlands.



Preliminary Report Chapter 17: Preventing the Spread of Invasive Species 199 C HAPTER 17: P REVENTING THE S PREAD OF I NVASIVE S PECIES The introduction of invasive aquatic species into marine and Great Lakes ecosystems costs the nation millions, or possibly billions of dollars a year in ...


Species of Concern Largetooth sawfish

2/23/2010 1 Photo credit: Maria Luiza Delgado Assad, Fishbase. Rationale for "Species of Concern" Listing: Demographic and Genetic Diversity Concerns: Simpfendorfer (2000), using age based demographic models, estimated the intrinsic rate of increase for largetooth sawfish was ...


River herring new

For both species, adults migrate quickly downstream after spawning and little is known about their life history while in the marine environment; however, ...


Global Facilitation

What is Amaranth and where does it come from? Amaranthus, collectively known as amaranth or pigweed, is a cosmopolitan genus of herbs. Approximately 60 species are presently recognized, with inflorescences and foliage ranging from purple and red to gold.


A Theory of Evolution Above the Species Level

Proc. Nat. Acad. Sci. USA 72 (1975) 0 20 406080000 2 3 4 0 5 C 2C SCORE CHANG E IN SCORE/MY DIVERS. Y GSN CR` FIG. 1. Rate of evolution of Dipnoi (lungfishes) from their time of origin.


The Phylogenetic Species Concept

Speciation: What is it How does it occur? Where does it occur? How long does it take to make a new species? Can we observe speciation in real time and/or in the fossil record?


Species: Ruminants (Bovine, Ovine, Caprine, Camolids)

Species: Ruminants (Bovine, Ovine, Caprine, Camolids) Jeff Ko, DVM, MS, DACVA 4/06/04 General considerations: • Many surgical procedures can be accomplished in cattle with a combination of physical restraint + local/regional anesthesia o Several common local anesthetic techniques will be ...


MICROCOMP output file

222 Sec. 3 ENDANGERED SPECIES ACT OF 1973 (4) the United States has pledged itself as a sovereign state in the international community to conserve to the extent practicable the various species of fish or wildlife and plants facing extinction, ...


On the Origin of Species

3 Charles Darwin On the Origin of Species by Charles Darwin 'But with regard to the material world, we can at least go so far as this—we can perceive that events are brought about not by insulated interpositions of Divine power, exerted in each particular case, but by the establishment of ...


Other sites you could try:

Find videos related to Species