1. Trang chủ
  2. » Luận Văn - Báo Cáo

Cá chép Châu Á loài sinh vật ngoại lai xâm hại ở Mĩ

13 220 0

Đang tải... (xem toàn văn)

Tài liệu hạn chế xem trước, để xem đầy đủ mời bạn chọn Tải xuống

THÔNG TIN TÀI LIỆU

Thông tin cơ bản

Định dạng
Số trang 13
Dung lượng 285,39 KB

Các công cụ chuyển đổi và chỉnh sửa cho tài liệu này

Nội dung

Invasion of the Asian CarpBy Ross Swanson... • The Asian Carp is trailing right behind!... Asian Carp Key Points • Anatomy of an Asian Carp • How Did This Invasion Begin • Threat to the

Trang 1

Invasion of the Asian Carp

By Ross Swanson

Trang 2

• The Great Lakes are not new to

invasive species.

• Zebra muscles, Sea Lamprey, Round Goby Etc.

• The Asian Carp is trailing right behind!

Trang 3

Asian Carp

Key Points

• Anatomy of an Asian Carp

• How Did This Invasion

Begin

• Threat to the Great Lakes

• What is Being Done Today

Trang 4

Source s

• http://www.epa.gov/glnpo/invasive

• http://www.in.gov/dnr/files/BIGHEAD_CARP.pdf

• http://www.watershedcouncil.org/learn/aquatic%20inva sive%20species/asian-carp/

• the-great-lakes-fishery-how-much-is-at-risk/

Trang 5

Anatomy of Asian Carp

Bighead Carp

• Gray with black blotches

• Eyes sit low on the facial region

• Contain no teeth

• Feed HEAVY on

plankton organisms

• Grow up to 4ft in length

• Rapid reproduction (2.2

million eggs)

Trang 6

Anatomy of Asian Carp

Silver Carp

• Silver in color

• Red on tips of their fins

• Eyes sit low on facial region

• Contain no teeth

• Feed HEAVY on plankton organisms

• Tend to be slightly smaller than the Bighead Carp

• Rapid reproduction

• Jump out of water when disturbed

Trang 7

How Did This Invasion

Begin?

• Asian Carp were introduced to the U.S in the 1970s

• Used as a management tool for aqua

culture farms and sewage treatment

facilities.

• Do to major flooding, Asian Carp escaped their holding areas and into tributaries of the Mississippi River.

Trang 8

How Did This Invasion Begin?

Cont.

• Reproduced rapidly

• Began to decimate southern ecosystem's due

to heavy feeding tendencies

• Have migrated north up the Mississippi River into the connecting Illinois River

• Direct route to Lake Michigan

Trang 10

The Threat

Asian Carp pose a great danger to Lake

Michigan and the remaining Great Lakes.

• Severe disruption of the food chain.

• 7 Billion dollar recreation industry at stake.

• Silver Carp can be harmful to human.

Trang 11

What is Being Done to Stop Them

2002-2011

• U.S Army Corps of Engineers constructed 3

electrical barriers on the Chicago ship canal.

2010-2011

• Launch of studies go underway in search for a more permanent solution.

Trang 12

What is Being Done to Stop

Them

2014

• U.S Army Corps of Engineers released their “Great Lakes and Mississippi River Interbasin Study” (GLMRIS)

• Contains plans to block Asian Carp by 2 alternatives

of hydrologic separation or either physical barriers.

• DNR of Illinois and Indiana net and kill as many as Asian Carp possible.

Trang 13

Conclusio n

Key Points

• Anatomy of Asian Carp

• How the Invasion Started

• The Threat to the Great Lakes

• What is Being Done to Stop

Them

Ngày đăng: 02/05/2019, 14:48

TỪ KHÓA LIÊN QUAN

TÀI LIỆU CÙNG NGƯỜI DÙNG

TÀI LIỆU LIÊN QUAN

🧩 Sản phẩm bạn có thể quan tâm

w