Rocky Shores - PBworks

Rocky Shores - PBworks

Mangrove Estuary Mangrove Estuary Swamp Investigation Aim: To compare the biotic and abiotic factors in two distinct mangrove swamp communities. Abiotic Factors In this lab, you will identify and measure the abiotic factors on the rocky shore.

- some of the factors that you will investigate are: Salinity, substrate, exposure to light, temperature, turbidity and more Abiotic Factors in the Mangrove Estuary Swamp

SUBSTRATE surface material The muddy substrate is composed of detritus, and fine inorganic particles. Some organisms burrow under the mud and live there. (we will not disturb them in our study). The mangrove roots go deep into the muddy substrate. Different species have specific root forms; many have aerial or buttress roots. Abiotic Factors on the Shore

TEMPERATURE Immersion in water buffers against temperature change. Abiotic Factors on the Shore LIGHT Needed for photosynthesis. Water will filter off some of the wavelengths of light and reduce the intensity. Small algae, e.g. some of the red algae, will photosynthesise with very little light and occur under other larger algae. Mangrove trees provide shade for species underneath. Some Abiotic Factors in the

Mangrove Estuary Swamp TURBIDITY is the cloudiness of the water. Large amounts of plankton, detritus, or sewage pollution can increase the turbidity. This restricts the light reaching the algae on the rocks. Using Quadrats for sampling

We cannot count all of the organisms in the two mangrove swamp communities. Instead we can take samples. We will imagine quadrats which are small square areas (usually 1m x 1m-ours are approx. 0.5m x 0.5m), and counting all of the organisms of each kind inside of these quadrats.

We will do this at each of the stations in our mangrove ecosystems. Identification and Abundance of Organisms As you observe the organisms of the estuary, you will count the individuals and record their abundance. The number of each species will be recorded as A=abundant, C=common, F=frequent,

O=occasional, R=rare, N=absent. (Known as the ACFOR(N) Scale) There are scales that will help guide you in determining the abundance for various types of organisms. Organisms to look for in the estuary swamp Mangroves: These interesting trees dominate the mangrove ecosystem.

There are several species in Thailand, two of which we will see easily, with a few others scattered about. Watch for differences in tree morphology, leaf structure, seed pods, and the root systems. Lichens: The symbiotic algae-fungi organisms grow on many surfaces. Organisms that you might find in the estuary swamp

Mudskippers These fish are able to survive out of the water for short bouts of time by storing water inside of their gill chambers and breathing through their wet skin. They can be seen near the roots of the mangrove trees. Blue crabs -- These crustaceans may be seen on the mangrove roots or near burrows. If lucky,

you will see them foraging! Snails: You will see a number of snails in the mangroves.

Recently Viewed Presentations

  • Science Success Academy

    Science Success Academy

    During a waning crescent, we can only see a small piece on the left that is lit up. After this phase is complete, the moon's cycle will start over again with the new moon. Waxing Crescent vs. Waning Crescent.
  • Enhancing the Effectiveness of your Service Gill Frigerio ...

    Enhancing the Effectiveness of your Service Gill Frigerio ...

    Management as a daily activity as well as a distinct role. ... (Boddy:150) Process, content and context all relevant. Processes can be seen as planning, learning, or political. The 'strategy loop' involves making sense, making choices, making things happen and...
  • Starter - BA English Revision

    Starter - BA English Revision

  • Environmental Kuznets Curve - Handelshøyskolen BI

    Environmental Kuznets Curve - Handelshøyskolen BI

    Stern's Regression Model (2003) ln E/P . it = i + y i + 1 ln GDP/P it + 2 ln GDP/P 2 it + it P = population. i = country. t = time. There may be an inverted...
  • Notes: Ocean Environments and Food Webs

    Notes: Ocean Environments and Food Webs

    Food Web: a more intricate food chain; animals usually don't eat only one thing, and most things are eaten by more than one type of animal. Example: Kelp Sea Urchins, Fish Sea Otters, Sea Lions Killer Whales, Sharks. Most marine...
  • Chapter 1: Matter and Measurement

    Chapter 1: Matter and Measurement

    General Chemistry Principles and Modern Applications Petrucci • Harwood • Herring 8th Edition Chapter 1: Matter—Its Properties and Measurement
  • Rapport Du Groupe De Travail A

    Rapport Du Groupe De Travail A

    3) Identification des besoins en formation Conception des modeles climatiques regionaux, Renforcement des systemes d'observation climatique au niveau national et regional, Consolidation des acquis en matiere d'Inventaire des Gaz a effet de Serre, de definition des mesures d'adaptation et d'attenuation,...
  • Natural Sciences and Technology Grade 5 Term 1:

    Natural Sciences and Technology Grade 5 Term 1:

    the structure has a frame or skeleton. a frame is built / assembled / put together by pieces of material that are attached together. open frame structures' frames are clearly visible. some frames are not clearly visible, because they are...