1995
DOI: 10.3838/jjo.44.143
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Abstract: An isolated population of Swedish Great Reed Warblers was studied between 1984 and 1993 when almost every breeding adult and nestling were ringed. I examined between year variation in several variables that may affect fintness. In particular I looked at the reproductive success of females that can expect no or little male assistance (secondary females) in relation to females that are assisted by their males (monogamous and primary females). Return rates of females, the frequency of total losses and number of f… Show more

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Cited by 4 publications
(6 citation statements)
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References 33 publications
(22 reference statements)
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“…Furthermore, nest predation was significantly lower in edges closer to grassland than at reed edges adjacent to water, suggesting that deeper water can be a limiting factor for some predators (Trnka et al 2009). As concerns the clutch size, Bensch (1995) found no significant relationship between clutch size and air temperature in long term variation. However, similarly to this study the hatching failure (as described by Bensch 1995), was not influenced by the air temperature.…”
Section: Discussionmentioning
confidence: 82%
See 1 more Smart Citation
“…Furthermore, nest predation was significantly lower in edges closer to grassland than at reed edges adjacent to water, suggesting that deeper water can be a limiting factor for some predators (Trnka et al 2009). As concerns the clutch size, Bensch (1995) found no significant relationship between clutch size and air temperature in long term variation. However, similarly to this study the hatching failure (as described by Bensch 1995), was not influenced by the air temperature.…”
Section: Discussionmentioning
confidence: 82%
“…Few Great Reed Warbler long-term studies analysed and discussed annual variations in polygyny (Bensch 1995), demographic variations and lifetime reproductive success (Hasselquist 1995), the effect of male arrival on their fitness (Hasselquist 1998), and how brood parasitism influences return rate in both sexes (Koleček et al 2015). However, we still know little about how weather circumstances and vegetation management affect breeding performance (e.g.…”
Section: Research Articlementioning
confidence: 99%
“…Recent experimental studies of male-removal (LYON et al 1987, WOLF et al 1988, BART & TORNES 1989 and long-term empirical studies (VIROLAINEN 1984, BENSCH 1995 have shown that the value of male assistance varies from year to year. This probably reflects year to year variation in parameters such as weather and food availability.…”
Section: Discussionmentioning
confidence: 99%
“…For example, in a Swedish population of Great Reed Warblers, a positive correlation was found between the mean temperature during a breeding season and the relative success of secondary status females to primary status females (BENSCH 1995).…”
Section: Discussionmentioning
confidence: 99%
“…1). The study sites longitudinally ranged almost 2000 km, from Switzerland (Dyrcz 1981) to the Pskov region in Russia (Fedorov 2000), and latitudinally c. 2100 km, from Sweden (Bensch 1995) to Turkey (Uzun et al 2014). To explore the variation in these variables across Europe, we used the following parameters as potential explanatory variables: longitude, latitude, maximum temperature (mean temperature in July as the hottest month), daily mean precipitation in mm, the number of days with precipitation, and mean precipitation.…”
mentioning
confidence: 99%