東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

Local-scale and foraging-scale habit...

Greenleaf, Sarah Ann Smith.

Linked to FindBook

Google Book

Amazon

博客來

Local-scale and foraging-scale habitats affect bee community abundance, species richness, and pollination services in northern California.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Local-scale and foraging-scale habitats affect bee community abundance, species richness, and pollination services in northern California./
Author:	Greenleaf, Sarah Ann Smith.
Description:	98 p.
Notes:	Source: Dissertation Abstracts International, Volume: 65-12, Section: B, page: 6151.
Contained By:	Dissertation Abstracts International65-12B.
Subject:	Biology, Ecology. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3156040
ISBN:	9780496166336

Local-scale and foraging-scale habitats affect bee community abundance, species richness, and pollination services in northern California.
Greenleaf, Sarah Ann Smith.

Local-scale and foraging-scale habitats affect bee community abundance, species richness, and pollination services in northern California. - 98 p.

Source: Dissertation Abstracts International, Volume: 65-12, Section: B, page: 6151.

Thesis (Ph.D.)--Princeton University, 2005.

As pollinators, bees are vital to the reproduction of most flowering plants and to the production of 15--30% of the United States' human food supply. The world's most important crop pollinator is the European honey bee, a domesticated species. With worldwide declines in honey bees and possible declines in wild bees, research has begun to investigate the ecological processes that are important for delivering crop pollination and to document how wild bees and their pollination services are affected by changing land use. This dissertation focuses on (1) the effects of local-scale and landscape-scale habitat variation on wild bee communities and (2) the role of wild bee community abundance and species richness in delivering pollination services.

ISBN: 9780496166336Subjects--Topical Terms:

1017726
Biology, Ecology.

Local-scale and foraging-scale habitats affect bee community abundance, species richness, and pollination services in northern California.
LDR:03332nmm 2200313 4500 001 1823376
005 20061130142428.5
008 130610s2005 eng d
020 $a 9780496166336
035 $a (UnM)AAI3156040
035 $a AAI3156040
040 $a UnM $c UnM
100 1 $a Greenleaf, Sarah Ann Smith. $3 1912485
245 1 0 $a Local-scale and foraging-scale habitats affect bee community abundance, species richness, and pollination services in northern California.
300 $a 98 p.
500 $a Source: Dissertation Abstracts International, Volume: 65-12, Section: B, page: 6151.
500 $a Adviser: Claire Kremen.
502 $a Thesis (Ph.D.)--Princeton University, 2005.
520 $a As pollinators, bees are vital to the reproduction of most flowering plants and to the production of 15--30% of the United States' human food supply. The world's most important crop pollinator is the European honey bee, a domesticated species. With worldwide declines in honey bees and possible declines in wild bees, research has begun to investigate the ecological processes that are important for delivering crop pollination and to document how wild bees and their pollination services are affected by changing land use. This dissertation focuses on (1) the effects of local-scale and landscape-scale habitat variation on wild bee communities and (2) the role of wild bee community abundance and species richness in delivering pollination services.
520 $a I carried out both descriptive and experimental research across agricultural and wild habitats in Northern California. I found that when more wild habitat was within foraging range, bee community abundance and species richness on sunflower crops increased. Experimentally placed bumble bee colonies produced more workers when more wild habitat was within their foraging range. An interaction between local and foraging scale habitat was associated with an increase in maximum colony weight.
520 $a I found that species richness is important for maintaining pollination services. First, certain bee species are highly efficient pollinators for some but not for other crops. Thus, to maintain pollination services for various crops, a species-rich bee community is beneficial. Second, synergism exists between bee species. Wild bees altered the foraging patterns of honey bees, making them substantially more efficient pollinators than when foraging alone. Third, bees are lost nonrandomly from the community, with the two most efficient direct sunflower pollinators being among the most extinction-prone species. Fourth, community abundance and species richness are correlated. Whether those two variables are driven by a third factor, such as habitat quality, or whether species richness covaries directly with community abundance, diminished species richness indicates depressed pollination services.
520 $a I suggest actions for maintaining pollination services. Effective approaches may be preserving wild habitat across the landscape, reintroducing locally extinct bees, and improving on-farm habit.
590 $a School code: 0181.
650 4 $a Biology, Ecology. $3 1017726
650 4 $a Biology, Entomology. $3 1018619
690 $a 0329
690 $a 0353
710 2 0 $a Princeton University. $3 645579
773 0 $t Dissertation Abstracts International $g 65-12B.
790 1 0 $a Kremen, Claire, $e advisor
790 $a 0181
791 $a Ph.D.
792 $a 2005
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3156040