1 / 16

Vertebrate populations, trophic dynamics and ecosystem function

Vertebrate populations, trophic dynamics and ecosystem function Knut Kielland - LTER Symposium 2008. Focus:. Population status and trends integrative ecological functions. Small mammal abundance index from 8 standardized trap lines interior Alaska 2003-2007. Total trap nights = 5,169

idra
Download Presentation

Vertebrate populations, trophic dynamics and ecosystem function

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Vertebrate populations, trophic dynamics and ecosystem function Knut Kielland - LTER Symposium 2008

  2. Focus: • Population status and trends • integrative ecological functions

  3. Small mammal abundance index from 8 standardized trap lines interior Alaska 2003-2007. Total trap nights = 5,169 Data: Excel data sheets - available Data from Whitman, ADF&G

  4. Denali National Park Data: NPS LTEM program Debevec and Flamme 2007

  5. Data: LTER archive thru 2006

  6. Moose population in GMU 20A - Tanana Flats (ADF&G) Data: electronic and hard copy  = 1.07 IMO

  7. 6% 33% C P 5X> (Butler and Kielland 2008)

  8. “Early Warning” Data from Paragi, ADF&G

  9. ADULT PREGNANCY 2-YR-OLD PREGNANCY 3-YR-OLD PREGNANCY TWINNING SHORT-YEARLING MASS AGE AT FIRST TWINNING BROWSE REMOVAL 20A 20A 13A 20D 19D 20C 25D 17A FLATS HILLS INCREASING NUTRITION POPULATION (GMU) Indices of NutritionPopulations ordered by twinning rate ADF&G data

  10. 130 120 110 100 130 90 120 80 110 70 100 60 90 50 80 40 70 30 60 20 50 10 40 (cm) 30 20 10 (cm) Moose mobility & snow depth MOOSE CONFINED SERIOUS DIFFICULTY MOVING RESTRICTED Brisket height SLIGHTLY RESTRICTED UNRESTRICTED Source: ADF&G

  11. Snow depth Data: ADF&G data base under construction 90 -130 cm 40 - 70 cm  40 cm

  12. Lynx ecology

  13. Record of lynx export/sealing data for the state of Alaska 1910-2005 (Kielland compilation 2007)

  14. 25 Jan – 1 Feb 2008

More Related