Landsat to monitor an endangered beetle population and its habitat: addressing annual life history and imperfect detection

2017 ◽  
Vol 10 (5) ◽  
pp. 385-398 ◽  
Author(s):  
Douglas R. Leasure
Keyword(s):  
Life History ◽  
Imperfect Detection ◽  
Beetle Population ◽  
Annual Life History

Vulnerability to eutrophication of a semi-annual life history: A lesson learnt from an extinct eelgrass (Zostera marina) population

2010 ◽  
Vol 143 (1) ◽  
pp. 248-254 ◽  
Author(s):  
Marieke M. van Katwijk ◽  
Arthur R. Bos ◽  
Peer Kennis ◽  
Rob de Vries
Keyword(s):  
Life History ◽  
Zostera Marina ◽  
Annual Life History

Seasonal cycle of the nest composition in the Ponerine ant Cryptopone sauteri (Hymenoptera: Formicidae)

Sociobiology ◽  
2017 ◽  
Vol 64 (4) ◽  
pp. 393
Author(s):  
Yuki Yamaguchi ◽  
Hiromi Yazawa ◽  
Satoru Iwanishi ◽  
Kazuyuki Kudô
Keyword(s):  
Life History ◽  
Seasonal Changes ◽  
Seasonal Cycle ◽  
Quantitative Information ◽  
Social Structures ◽  
Ecological Studies ◽  
Brood Development ◽  
Ponerine Ant ◽  
History Of ◽  
Annual Life History

The annual life history is a basic and important factor in ecological studies on temperate ant species. The biology of Ponerinae species has been studied for many species, but little attention has been paid to their life history. Cryptopone sauteri is one of the most common ants in temperate regions of Japan. However, there is no quantitative information on the life history of this species. We report seasonal changes in brood development, the emergence of reproductives and social structures of C. sauteri. Additionally, we discuss that this species possibly exhibits a polydomous nesting system.

scholarly journals Circadian timing in central and peripheral tissues in a migratory songbird: dependence on annual life‐history states

2015 ◽  
Vol 29 (10) ◽  
pp. 4248-4255 ◽  
Author(s):  
Devraj Singh ◽  
Amit Kumar Trivedi ◽  
Sangeeta Rani ◽  
Satchidananda Panda ◽  
Vinod Kumar
Keyword(s):  
Life History ◽  
Peripheral Tissues ◽  
Circadian Timing ◽  
Migratory Songbird ◽  
Annual Life History

Annual Life History–Dependent Gene Expression in the Hypothalamus and Liver of a Migratory Songbird

2014 ◽  
Vol 29 (5) ◽  
pp. 332-345 ◽  
Author(s):  
Amit K. Trivedi ◽  
Jayant Kumar ◽  
Sangeeta Rani ◽  
Vinod Kumar
Keyword(s):  
Gene Expression ◽  
Life History ◽  
Migratory Songbird ◽  
Annual Life History

scholarly journals Evolution of morphological and climatic adaptations inVeronica L.(Plantaginaceae)

PeerJ ◽  
2016 ◽  
Vol 4 ◽  
pp. e2333 ◽  
Author(s):  
Jian-Cheng Wang ◽  
Bo-Rong Pan ◽  
Dirk C. Albach
Keyword(s):  
Life History ◽  
Substitution Rate ◽  
Parallel Evolution ◽  
Morphological Characters ◽  
Annual Species ◽  
Selective Pressures ◽  
History Of ◽  
Phylogenetic Perspective ◽  
Drought Resistant ◽  
Annual Life History

Perennials and annuals apply different strategies to adapt to the adverse environment, based on ‘tolerance’ and ‘avoidance’, respectively. To understand lifespan evolution and its impact on plant adaptability, we carried out a comparative study of perennials and annuals in the genusVeronicafrom a phylogenetic perspective. The results showed that ancestors of the genusVeronicawere likely to be perennial plants. Annual life history ofVeronicahas evolved multiple times and subtrees with more annual species have a higher substitution rate. Annuals can adapt to more xeric habitats than perennials. This indicates that annuals are more drought-resistant than their perennial relatives. Due to adaptation to similar selective pressures, parallel evolution occurs in morphological characters among annual species ofVeronica.

scholarly journals Foraging and fasting can influence contaminant concentrations in animals: an example with mercury contamination in a free-ranging marine mammal

2018 ◽  
Vol 285 (1872) ◽  
pp. 20172782 ◽  
Author(s):  
Sarah H. Peterson ◽  
Joshua T. Ackerman ◽  
Daniel E. Crocker ◽  
Daniel P. Costa
Keyword(s):  
Life History ◽  
Mercury Contamination ◽  
Mirounga Angustirostris ◽  
Elephant Seals ◽  
Northern Elephant Seals ◽  
Large Fluctuations ◽  
Before And After ◽  
Blood Mercury ◽  
Annual Life History ◽  
Free Ranging

Large fluctuations in animal body mass in relation to life-history events can influence contaminant concentrations and toxicological risk. We quantified mercury concentrations in adult northern elephant seals ( Mirounga angustirostris ) before and after lengthy at sea foraging trips ( n = 89) or fasting periods on land ( n = 27), and showed that mercury concentrations in blood and muscle changed in response to these events. The highest blood mercury concentrations were observed after the breeding fast, whereas the highest muscle mercury concentrations were observed when seals returned to land to moult. Mean female blood mercury concentrations decreased by 30% across each of the two annual foraging trips, demonstrating a foraging-associated dilution of mercury concentrations as seals gained mass. Blood mercury concentrations increased by 103% and 24% across the breeding and moulting fasts, respectively, demonstrating a fasting-associated concentration of mercury as seals lost mass. In contrast to blood, mercury concentrations in female's muscle increased by 19% during the post-breeding foraging trip and did not change during the post-moulting foraging trip. While fasting, female muscle mercury concentrations increased 26% during breeding, but decreased 14% during moulting. Consequently, regardless of exposure, an animal's contaminant concentration can be markedly influenced by their annual life-history events.

scholarly journals Amphibian terrestrial habitat selection and movement patterns vary with annual life-history period

2017 ◽  
Vol 95 (6) ◽  
pp. 433-442 ◽  
Author(s):  
Luke A. Groff ◽  
Aram J.K. Calhoun ◽  
Cynthia S. Loftin
Keyword(s):  
Life History ◽  
Habitat Selection ◽  
Habitat Use ◽  
Movement Patterns ◽  
Spring Migration ◽  
Spatiotemporal Variability ◽  
Amphibian Conservation ◽  
Lithobates Sylvaticus ◽  
Habitat Features ◽  
Annual Life History

Identification of essential habitat is a fundamental component of amphibian conservation; however, species with complex life histories frequently move among habitats. To better understand dynamic habitat use, we evaluated Wood Frog (Lithobates sylvaticus (LeConte, 1825)) habitat selection and movement patterns during the spring migration and foraging periods and described the spatiotemporal variability of habitats used during all annual life-history periods. We radio-tracked 71 frogs in Maine during 2011–2013 and evaluated spring migration, foraging activity center (FAC), and within-FAC habitat selection. Telemetered frogs spent the greatest percentage of each field season in hibernacula (≥54.4%), followed by FACs (≥25.5%), migration habitat (≥16.9%), and breeding sites (≥4.5%). FACs ranged 49 – 1 335 m2 (568.0 ± 493.4 m2) and annual home ranges spanned 1 413 – 32 165 m2 (11 780.6 ± 12 506.1 m2). During spring migration, Wood Frogs exhibited different movement patterns (e.g., turn angles), selected different habitat features, and selected habitat features less consistently than while occupying FACs, indicating that the migration and foraging periods are ecologically distinct. Habitat-use studies that do not discriminate among annual life-history periods may obscure true ecological relationships and fail to identify essential habitat necessary for sustaining amphibian populations.

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