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Showing posts from September, 2018

Circulatory system of chordates

Contents 1.       Circulatory system…………………………………………….   3 2.       What are chordates?...................................................................   3 3.       General features of circulation……………………………….     3-4 4.       Body fluids……………………………………………………    5 5.       Fluid compartments…………………………………………..     5-6 6.       Blood………………………………………………………....     6 7.       Hearts…………………………...……………………………     7-8 8.       The Flow of Blood inside the Heart………………………….     8-9 9.       References……………………………………………………..   10 Circulatory system ,   system that transports nutrients, respiratory gases, and metabolic products throughout a living...

FARM PONDS AS CRITICAL HABITATS FOR NATIVE AMPHIBIANS

CONTENTS 1.       Introduction………………………………………….. 1 2.       Amphibians…………………………………………... 1 3.       Farm pond ecology…………………………………... 2 4.       Habitat requirements for Amphibians……………... 3 5.       Post-breeding habitat use ………………………….... 3 6.       Water Chemistry and Toxicity of Ponds…………… 3 7.       Amphibian Larval …………………………………… 3 8.       Summary……………………………………………… 4 9.       References…………………………………………….. 5 Introduction Constructed farm ponds represent significant breeding, rearing, and over-wintering habitat for amphibians in the Driftless Area Ecoregion of southeastern Minnesota, western Wisconsin, and northeastern Iowa, a landscape where natural wetlands are scarce.Despite intensive agricultural use adjacent to the ponds, th...