Oceanography Comparing Approaches to the Carbon-Based Productivity Model: Assessing the Sensitivity of Remote Sensing-Derived Phytoplankton Productivity to Mixed Layer Depth. The purpose of this review is to compare approaches or variations of approaches that are being used to assess the sensitivity of phytoplankton productivity to mixed layer depth. The challenge to clarifying controls on primary productivity and the related responses and feedbacks is a key objective of research on global change. In order

It is difficult to assess to what extent these changes be contributed to global warming, however, due to the relatively short history of observation available to oceanographers. The events put forth in the Pentagon Report are a plausible scenario, although many scientists contest the events as something which is not likely to happen in the near future. There is every possibility though that if climate change continues due to

endangered coral reef ecosystem. Coral reefs, when they are healthy, are one of the most diverse ecosystems on the planet. They contain so much life and interaction many scientists call them the "rainforests of the seas." Yet these reefs are endangered around the world, and their ecosystems are changing because of pollution, mismanagement of the natural resources, and the influence of man on the fragile environments of the coral

Coral reefs are often coined as the rainforests of the sea, and they are one of the most diverse ecosystems on the planet. Although they cover less than 1 percent of the Earth's surface, coral reefs house about one-third of all marine species. It is estimated that there are about 3.2 million species that inhabit coral reef ecosystems. The coral reefs not only provide biodiversity, they also play a vital

Human Effects on Coral Reefs Coral reefs are one of the oldest ecosystems in the world, existing for more than 450 million years. A coral reef is a type of biotic reef that develops in tropical waters. Coral reefs are found in all oceans of the world, generally between the Tropic of Cancer and the Tropic of Capricorn because the reef-building corals are living in this waters. A water temperature of 20

The fact is that numerous rooted macrophyte structures are not full of naturally strong and healthy particles and sediments and nutrients. It is because of the restriction or absence of these particles, sediments and nutrients that the study of these systems has not been as extensive and thorough as the concentration on the terrestrial structures when understanding the fate, sources and sinks of Co2 levels in the ecosystems and the