World’s mangroves, salt marshes hold potential for reducing carbon emissions
Mangroves, the dense forests found along tropical and subtropical coastlines, have some specialized trees that can take in air through their roots at low tide and excrete salt right out of their leaves. The unusual ecosystems can also absorb large amounts of carbon dioxide, making them a natural solution for controlling greenhouse gases.
Disrupt them, however, and they’ll put that carbon right back into the atmosphere. (more…)
Floods didn’t make floodplains fertile during the dawn of human agriculture in the Earth’s far north because the waters were virtually devoid of nitrogen, unlike other areas of the globe scientists have studied.
Instead, the hardy Norsemen and early inhabitants of Russia and Canada have microorganisms called cyanobacteria to mostly thank for abundant grasses that attracted game to hunt and then provided fodder once cattle were domesticated. The process is still underway in the region’s pristine floodplains. (more…)
Sustainable management of a huge, complex and valuable resource such as the ocean requires a comprehensive metric that did not exist until now. In the Aug. 16 edition of Nature a broad group of scientists including Heather Leslie, the Sharpe Assistant Professor of Environmental Studies, describes the Ocean Health Index. The index rates coastal places, from regions to nations, on 10 goals: artisanal fishing opportunity, biodiversity, carbon storage, clean waters, coastal livelihoods and economies, coastal protection, food provision, natural products, sense of place, and tourism and recreation. Leslie recently answered questions posed by David Orenstein.
How does the Ocean Health Index’s focus on integrating human factors make it different and valuable?
Recognizing people’s integral roles in ocean ecosystems, this index evaluates how well the ocean provides 10 key benefits to people and how well we are protecting its ability to do so in the future. (more…)
