Spatial Patterns of Breeding Success of Grizzly Bears Derived from Hierarchical Multistate Models

2014 ◽  
Vol 28 (5) ◽  
pp. 1249-1259 ◽  
Author(s):  
JASON T. FISHER ◽  
MATTHEW WHEATLEY ◽  
DARRYL MACKENZIE
Keyword(s):  
Spatial Patterns ◽  
Breeding Success ◽  
Grizzly Bears ◽  
Multistate Models

scholarly journals Spatial synchrony of breeding success in the blacklegged kittiwake Rissa tridactyla reflects the spatial dynamics of its sandeel prey

2020 ◽  
Vol 638 ◽  
pp. 177-190
Author(s):  
AB Olin ◽  
NS Banas ◽  
PJ Wright ◽  
MR Heath ◽  
RG Nager
Keyword(s):  
Spatial Patterns ◽  
Breeding Success ◽  
Spatial Dynamics ◽  
Weather Conditions ◽  
Rissa Tridactyla ◽  
Demographic Rates ◽  
Long Term Trends ◽  
Underlying Mechanisms ◽  
The Uk

Synchrony in demographic rates between spatially disjunct populations is a widespread phenomenon, although the underlying mechanisms are often not known. This synchrony and its spatial patterns can have important consequences for the long-term persistence of metapopulations and can also be used to infer drivers of population dynamics. Here, we examined spatial patterns of synchrony in the breeding success of black-legged kittiwakes Rissa tridactyla in the UK, using an extensive dataset on kittiwake breeding success and 2 different ways of measuring synchrony: one reflecting synchrony in inter-annual fluctuations only (rdiff) and one reflecting synchrony in both inter-annual fluctuations and long-term trends (r). We found that between-colony synchrony in breeding success decreased with distance up to just over 200 km but that some colony pairs showed stronger or weaker synchrony than expected based on distance. This was also reflected in the configuration of spatially coherent clusters of kittiwake colonies with synchronous breeding success. Further, we compared the support for different drivers of these spatial patterns, including trophic interactions and weather conditions. We found that the spatial dynamics of the kittiwakes’ main prey in this region, the lesser sandeel Ammodytes marinus, appeared to play some role in generating synchrony in long-term patterns, but their role in generating synchrony in inter-annual fluctuations was less clear. The study shows that examining spatial patterns in synchrony can provide useful information for inferring potential drivers and the spatial scale over which they are acting.

Climate change and breeding success: decline of the capercaillie in Scotland

2001 ◽  
Vol 70 (1) ◽  
pp. 47-61 ◽  
Author(s):  
Robert Moss ◽  
James Oswald ◽  
David Baines
Keyword(s):  
Climate Change ◽  
Breeding Success

Hawk kite as potential bird scare device (the case of pigeons and grain processing factory)

2018 ◽  
Vol 8 (2) ◽  
pp. 334-336
Author(s):  
A. V. Matsyura
Keyword(s):  
Spatial Patterns ◽  
Repellent Effect ◽  
Preliminary Results ◽  
Temporal And Spatial Patterns ◽  
Grain Processing ◽  
Feral Pigeons ◽  
Temporal And Spatial ◽  
Bird Behavior ◽  
Hooded Crows

Here we presented the preliminary results of hawk kite usage against the feral pigeons in some grain processing factory. We studied the temporal and spatial patterns of repellent effect and bird behavior. We suggested the feral pigeons gradually increase the level of tolerance towards the hawk kite if no additional repellent measures were undertaken. Moreover, even initially the feral pigeons demonstrate higher tolerance towards the hawk kite compared to the Rooks or Hooded Crows.

The Breeding Success of Lesser Kestrels Falco naumanni in Mongolia

2020 ◽  
Vol 19 (1) ◽  
pp. 73
Author(s):  
Onolragchaa Ganbold ◽  
John Azua ◽  
Woon Kee Paek ◽  
Munkhbaatar Munkhbayar ◽  
Ariunbold Jargalsaikhan ◽  
...  
Keyword(s):  
Breeding Success ◽  
Falco Naumanni
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