Navigation Links
New study ranks 'hotspots' of human impact on coastal areas

(Santa Barbara, Calif.) Coastal marine ecosystems are at risk worldwide as a result of human activities, according to scientists at UC Santa Barbara who have recently published a study in the Journal of Conservation Letters. The authors have performed the first integrated analysis of all coastal areas of the world.

"Resource management and conservation in coastal waters must address a litany of impacts from human activities, from the land, such as urban runoff and other types of pollution, and from the sea," said Benjamin S. Halpern, first author, who is based at the National Center for Ecological Analysis and Synthesis (NCEAS) at UCSB.

"One of the great challenges is to decide where and how much to allocate limited resources to tackling these problems," he said. "Our results identify where it is absolutely imperative that land-based threats are addressed so-called hotspots of land-based impact and where these land-based sources of impact are minimal or can be ignored."

The hottest hotspot is at the mouth of the Mississippi River, explained Halpern, with the other top 10 in Asia and the Mediterranean. "These are areas where conservation efforts will almost certainly fail if they don't directly address what people are doing on land upstream from these locations."

Nutrient runoff from upstream farms has caused a persistent "dead zone" in the Gulf of Mexico, where the Mississippi runs into this body of water. The dead zone is caused by an overgrowth of algae that feeds on the nutrients and takes up most of the oxygen in the water.

The authors state that they have provided the first integrated analysis for all coastal areas of the world. They surveyed four key land-based drivers of ecological change:

  • nutrient input from agriculture in urban settings

  • organic pollutants derived from pesticides

  • inorganic pollutants from urban runoff

  • direct impact of human populations on coastal marine habitats.

Halpern explained that a large portion of the world's coastlines experience very little effect of what happens on land nearly half of the coastline and more than 90 percent of all coastal waters. "This is because a vast majority of the planet's landscape drains into relatively few very large rivers, that in turn affect a small amount of coastal area," said Halpern. "In these places with little impact from human activities on land, marine conservation can and needs to focus primarily on what is happening in the ocean. For example: fishing, climate change, invasive species, and commercial shipping."


Contact: Gail Gallessich
University of California - Santa Barbara

Related biology news :

1. Childhood obesity indicates greater risk of school absenteeism, Penn study reveals
2. A study by the MUHC and McGill University opens a new door to understanding cancer
3. Study begins to reveal clues to the cause and progression of sepsis
4. Clones on task serve greater good, evolutionary study shows
5. New study warns limited carbon market puts 20 percent of tropical forest at risk
6. New study examines how rearing environment can alter navigation
7. Study links cat disease to flame retardants in furniture and to pet food
8. New continent and species discovered in Atlantic study
9. Study shows link between alcohol consumption and hiv disease progression
10. Feeling hot, hot, hot: New study suggests ways to control fever-induced seizures
11. Study finds environmental tests help predict hospital-acquired Legionnaires disease risk
Post Your Comments:
Related Image:
New study ranks 'hotspots' of human impact on coastal areas
(Date:4/24/2017)... April 24, 2017 Janice Kephart ... with  Identity Strategy Partners, LLP (IdSP) , today ... without President Trump,s March 6, 2017 Executive ... , refugee vetting can be instilled with greater confidence, ... now, all refugee applications are suspended by until ...
(Date:4/13/2017)... , April 13, 2017 UBM,s Advanced ... will feature emerging and evolving technology through ... Innovation Summits will run alongside the expo portion of ... sessions, panels and demonstrations focused on trending topics within ... advanced design and manufacturing event will take place June ...
(Date:4/11/2017)... 11, 2017 No two people are ... the New York University Tandon School of Engineering ... found that partial similarities between prints are common ... mobile phones and other electronic devices can be ... vulnerability lies in the fact that fingerprint-based authentication ...
Breaking Biology News(10 mins):
(Date:10/11/2017)... NJ (PRWEB) , ... October 11, 2017 , ... Personal eye wash is a basic ... one eye at a time. So which eye do you rinse first if a dangerous ... have Plum Duo Eye Wash with its unique dual eye piece. , “Whether ...
(Date:10/11/2017)... ... October 11, 2017 , ... Proscia Inc ... hosting a Webinar titled, “Pathology is going digital. Is your lab ready?” with ... adoption best practices and how Proscia improves lab economics and realizes an increase ...
(Date:10/11/2017)... and LAGUNA HILLS, Calif. , Oct. ... Cancer Research, London (ICR) and University ... SKY92, SkylineDx,s prognostic tool to risk-stratify patients with multiple myeloma ... MUK nine . The University of Leeds ... partly funded by Myeloma UK, and ICR will perform the ...
(Date:10/11/2017)... ... October 11, 2017 , ... A new ... rates in frozen and fresh in vitro fertilization (IVF) transfer cycles. ... to IVF success. , After comparing the results from the fresh and frozen ...
Breaking Biology Technology: