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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...

Metamorphosis in Arthropods What are arthropods? An   arthropod   ( arthro- , joint +   podos , foot) is an   invertebrate   animal   having an   exoskeleton , a- segmented   body, and jointed   appendages   (paired appendages). Arthropods form the   phylum   Arthropoda , which includes the insects ,   arachnids ,   myriapods , and   crustaceans . The arthropod   body plan   consists of   segments , each with a pair of appendages . The rigid cuticle inhibits growth, so arthropods replace it periodically by   molting . Their versatility has enabled them to become the most species-rich members of all   ecological guilds   in most environments. They have over a million described species, making up more than 80% of all described living animal species, some of which, unlike most animals, are very successful in dry environments. What is metamorphosis? Metamorphosis   is a...