Estuaries essay

Significantly reduces use of fossil fuels farm machines and transport of crops Makes use of abandoned or unused properties No weather related crop failures Offers the possibility of sustainability for urban centers Converts black and gray water to drinking water Adds energy back to the grid via methane generation Creates new urban employment opportunities Reduces the risk of infection from agents transmitted at the agricultural interface Returns farmland to nature, helping to restore ecosystem functions and services Controls vermin by using restaurant waste for methane generation No-cost restoration of ecosystems: The best reason to consider converting most food production to vertical farming is the promise of restoring ecosystem services and functions This belief stems, in part, from numerous anecdotal observations as to the current biological state of some territories that were once severely damaged either by now-extinct civilizations or over-farming, and, in part, from data derived from National Science Foundation-sponsored long-term ecological research program LTERbegun inon a wide variety of fragmented ecosystems purposely set aside subsequent to an extended period of encroachment The following case studies will serve to illustrate these points.

Estuaries essay

Other seaweed may be used as fertilizercompost for landscaping, or a means of combating beach erosion through burial in beach dunes. Seaweed is an ingredient in toothpaste, cosmetics and paints. Seaweed collecting is the process of collecting, drying and Estuaries essay seaweed.

It was a popular pastime in the Victorian era and remains a hobby today. In some emerging countries, Seaweed is harvested daily to support communities.

Women in Tanzania grow "Mwani" seaweed in Swahili. The farms are made up of little sticks in neat rows in the warm, shallow water. Once they harvest the seaweed, it is used for many purpose: They have long been grazed by sheep, horses and cattle in Northern Europe.

They are currently particularly valuable for fish production. Here, a farmer tends to her farm in Paje, on the southeast coast of the island. Mwanaisha Makame and Mashavu Rum, who have been farming seaweed on beautiful Zanzibar island for 20 years, wade through the low tide to their farm.

The seaweed grows underwater for 45 days. When it reaches one kilogram, the women pick it and dry it, then pack it in bags to be exported to countries like China, Korea and Vietnam.

There, it's used in medicines and shampoos. The farmers have a lot of problems due to climate change. Two decades ago, seaweed farmers roamed Paje. Now, only about farmers remain. Mwanaisha holds up a healthy clump of seaweed. Then she holds up seaweed the farmers won't be able to use.

A hard white substance grows on it - ice-ice disease, caused by higher ocean temperatures and intense sunlight. The seaweed farmers learned how to make soap from their seaweed.

Later in the week, the seaweed farmers will sell their finished soaps in Zanzibar town or to regular local customers. As seaweed levels decline, they have found a way to increase the value of their work.

The finished product - a bar of seaweed soap. Health risks[ edit ] Rotting seaweed is a potent source of hydrogen sulfidea highly toxic gas, and has been implicated in some incidents of apparent hydrogen-sulphide poisoning.

The stinging seaweed Microcoleus lyngbyaceus contains several known toxins including lyngbyatoxin-a and debromoaplysiatoxin. Direct skin contact can cause seaweed dermatitis characterized by painful, burning lesions that subsist for several days.Seaweed has a variety of purposes, for which it is farmed or foraged from the wild..

At the beginning of , Indonesia produced 3 million tonnes of seaweed and surpassed the Philippines as the world's largest seaweed producer. By , the production was estimated to have reached 10 million tonnes.

Eutrophication and algal boom.

Remembering Course Terms

Eutrophication Eutrophication is a condition in an aquatic ecosystem where high nutrient concentrations stimulate blooms of algae (e.g., phytoplankton).

The author of this article, a vice president of J.P. Morgan & Co. Incorporated, together with his wife, Valentina P. Wasson, M.D., a New York pediatrician, has spent the last four summers in remote mountains of Mexico.

Overall this essay summarises some of the ways in which humans have negative and positive impacts on the environment, by focusing on a few of the many examples. Abstract. The advent of agriculture has ushered in an unprecedented increase in the human population and their domesticated animals.

Farming catalyzed our transformation from primitive hunter-gatherers to sophisticated urban dwellers in just 10, years.

Estuaries essay

Rabindranath Tagore. Biography of Rabindranath Tagore and a searchable collection of works.

Effect of eutrophication and algal boom