Biology Excursion Question Using data collected on field trip and two named animals, explain the relationship between the distribution and abundance of these two organisms and the abiotic features of the rock platform. There is a close relationship between the abundance and the distribution of organisms living amongst the long reef platform. Abiotic features such as temperature range, salinity, Ph. levels, turbidity, water availability effect the distribution and abundance of aquatic sea creatures living in the area. Some of the organisms such as Tesseropora Roseas (Barnacles) and Knobbly Winks have different adaptations, which allow them to survive in these harsh conditions.
INTRODUCTION Nereis succinea (commonly known as clamworm) are in Class Polychaeta. N. succinea belongs to a free-swimming group of worms. They have bristle like appendages which are used for respiration and allow them to swim or crawl along the sea floor (Campbell, 2008). N. succinea is ubiquitous in number and commonly resides in estuaries. Some species can also be found around mudflats and sand flats which are high in salinity.
There are many different species of Algae which can range in size from microscopic to a couple meters long. Phytoplankton is at the bottom of the food chain and is eaten by small crustaceans which are called Zooplanktons. Zooplanktons are eaten by fish, invertebrates, mollusks, ducks, and turtles. • Plants: Around fifty species of food and shelter providing plants- Plants along with Algae provide the Rideau River with oxygen. Some of the plants in the Rideau River are carnivorous.
These little fellows are found higher in the intertidal area. Watch for them in tide pools, under rocks, and under clumps of seaweed. They're very common here. Lower in the intertidal, you'll see the granular hermit crab (Pagurus granosimanus). It has red or orange antennae, lacks hair, and its claws seem rough or grainy.
The Northern Snakehead can survive up to four days out of water and can grow up to 33 inches long. The species has been nicknamed “Frankenfish” due to its shark-like teeth and aggressiveness. It was first introduced in a pond in Crofton, Maryland in June 2002. Researchers believe the species ended up in the U.S. due to uncaring disposal of aquarium pets. Other researchers think some people were trying to breed Snakeheads as they bring a large amount of money in some areas.
Another predator that feeds on the phytoplankton and zooplankton is the basking shark, capable of filtering a thousand gallons in a minute. Early spring in British Columbia, seaweed forms great beds
Sea anemones, from the Phylum Cnidaria, can be distinguished from feather stars, from the Phylum Echinodermata, due to their distinct morphology. Most sea anemones have a body column, with a fleshy pedal disc at the bottom and a mouth ringed with stinging tentacles on the top ("Sea Anemones (Actiniaria) On The Shores Of Singapore"). In contrast, feather stars have pinnate (feather-like) arms that extend from a cup-shaped central body called the calyx; numerous slender branches called pinnules branch out from the left and right sides of each main arm ("Feather stars (Crinoidea) on the Shores of Singapore"). Tube feet (podia) further branch off from the pinnules and arms, creating the characteristic "feather-like" look of the feather star ("Feather stars (Crinoidea) on the Shores of Singapore").
Fred Thompson Zoology 2/19/13 Heart Rate of Blackworms Experiment Introduction Blackworms are a species of worm that typically lives in shallow water habitats. They feed on microscopic organisms and organic matter. The scientific name for Blackworms is Lumbriculus variegatus and their classification is as follows: Kingdom: Animalia, Phylum: Annelida, Class: Clitellata, Subclass: Oligochaeta, Order Lumbriculida, Family Lumbriculidae and Genus: Lumbriculus (Svahn, 2009). An adult black worm can have anywhere from 130 segments to 250 segments. These segments are capable of forming a completely new black worm when detached from the host body, and in most Blackworms is the primary for of siring offspring.
In warmer periods there is less ice and the water is warmer, so expands and sea levels rise. In colder periods the ocean water is colder so contracts and sea levels fall. There are also other land changes that occur, such as knick points, river terraces and incised meanders. Knick points are the part of the river/channel where there is a sharp change in channel slope, such as a waterfall. Knick points reflect different conditions and processes on the river often caused by previous erosion.
This isolation may be due to human practices or natural occurrences which drive aggradation or in‐stream incision. When high flows occur under these physical conditions, the stream or river has a restricted area to flow and higher flow velocities and energies are produced. Ideally, during high flows the river system would be able to over top its banks and spread over a large flat area surrounding the river, the floodplain (Figure 1). Floodplain reconnection reestablishes the connection between the stream system and its floodplain. This is accomplished through lowering or setting back natural or constructed levees currently blocking the flow of water out of the main channel.