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Auteur Thomas N. Kaye |
Documents disponibles écrits par cet auteur (4)
Affiner la rechercheConservation and management of native plants and fungi / Thomas N. Kaye (1997)
Titre : Conservation and management of native plants and fungi : proceedings of an Oregon Conference on the Conservation and Management of Native Vascular Plants, Bryophytes, and Fungi / Type de document : Imprimé Auteurs : Thomas N. Kaye ; Aaron Liston ; R. M. Love ; D.L. Luoma ; R. J. Meinke ; Mark V. Wilson Editeur : [Portland, Or.] : Native Plant Society of Oregon Année de publication : 1997 Importance : 296 p. Présentation : ill., maps Format : 28 cm ISBN/ISSN/EAN : 978-0-9656852-0-7 Note générale : "Based on a conference held at LaSells Stewart Center, Oregon State University, Corvallis, Oregon, November 15-17 1995." "Proceedings from a Conference of the Native Plant Society of Oregon"--Cover. Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Conservation et gestion des espèces
[CBNPMP-Thématique] RevégétalisationPermalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=148740 Kaye, Thomas N., Liston, Aaron, Love, R. M., Luoma, D.L., Meinke, R. J., Wilson, Mark V. , 1997. Conservation and management of native plants and fungi : proceedings of an Oregon Conference on the Conservation and Management of Native Vascular Plants, Bryophytes, and Fungi /. Native Plant Society of Oregon, [Portland, Or.]. 296 pp. : ill., maps ; 28 cmFrom flowering to dispersal : reproductive ecology of an endemic plant, Astragalus australis var. olympicus (Fabaceae) / Thomas N. Kaye in American Journal of Botany, 86 (9) (1999)
Titre : From flowering to dispersal : reproductive ecology of an endemic plant, Astragalus australis var. olympicus (Fabaceae) Type de document : Imprimé Auteurs : Thomas N. Kaye Année de publication : 1999 Article en page(s) : 1248-1256 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Système de reproduction Mots-clés : Astragalus Résumé : Astragalus australis var. olympicus is an endemic plant of the Olympic Mountains, Washington. It is considered a Species of Concern by the U.S. Fish and Wildlife Service. This study focused on the reproductive biology of the plant from flower production through seed germination to identify possible weak points that might contribute to its rarity and impede its conservation. Most plants produced a large mean number of flowers and ovules (314.8 and 4106, respectively), but relatively few of these formed fruits and seeds (25.8 and 3.8%, respectively). In decreasing importance, ovules in fruits were lost to predation, seed abortion, and lack of fertilization. The percentages of these fates differed among sites and years. Excluding pollinators by bagging flowers reduced fruit set by ∼50%, but seed set per fruit and seed mass were unaffected. Germination was affected by scarification, temperature, and moisture availability. About 11% of seeds damaged by predispersal seed predators (weevil larvae) remained viable and were released from dormancy. I hypothesize that predispersal seed predation (over 80% at one site) has a negative effect on population growth. Conservation of this species could benefit from improved fruit set and decreased seed predation. Lien pérenne : DOI : 10.2307/2656772 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=137538
in American Journal of Botany > 86 (9) (1999) . - 1248-1256Kaye, Thomas N. 1999 From flowering to dispersal : reproductive ecology of an endemic plant, Astragalus australis var. olympicus (Fabaceae). American Journal of Botany, 86(9): 1248-1256.Documents numériques
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article (1999)URLSeed dormancy in high elevation plants : Implications for ecology and restoration / Thomas N. Kaye (1997)
Titre : Seed dormancy in high elevation plants : Implications for ecology and restoration Type de document : Extrait d'ouvrage Auteurs : Thomas N. Kaye Année de publication : 1997 Importance : 115-120 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Dormance
[CBNPMP-Thématique] Germination : généralités
[CBNPMP-Thématique] RevégétalisationRésumé : Seed germination is a crucial event in the life of every sexually reproduced higher plant. A portion of the seeds of many species are dormant; they do not germinate unless specific environmental signals or events occur. The objective of this research was to determine the extent of seed dormancy in 28 species of grasses and forbs from alpine-subalpine areas of the Olympic Mountains, Clallam Co., Washington. Five species were non-dormant. After-ripening improved germination of eight species, five required cold stratification, scarification benefitted four, and some seeds of 11 species required light. Four others failed to germinate at all under the given treatments. At least one species may have possessed more than one dormancy mechanism. Results from this study support recommendations for shallow or surface sowing of seeds to satisfy light requirements and fall-planting to increase the likelihood of natural scarification and cold stratification. The diversity and extent of dormancy mechanisms encountered here suggests that under harsh and uncertain alpine growing conditions, natural selection may favor seeds with a genetic system for dormancy and delayed germination. After-ripening occurred even while seeds were in cold-dry storage, suggesting that ecological studies should not use cold-stored seeds and assume they will behave as though they are freshly matured. Seed dormancy may control germination timing and rate, which in turn effect plant establishment and competitive ability, and ultimately population, successional, and community patterns of high-elevation vegetation. Successful germination protocols improve propagation success and aid efforts to revegetate disturbed areas in Olympic National Park and other high-elevation areas in the Pacific Northwest Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=148741 Kaye, Thomas N. 1997 Seed dormancy in high elevation plants : Implications for ecology and restoration. In: Conservation and management of native plants and fungi. Native Plant Society of Oregon, [Portland, Or.]: 115-120.Documents numériques
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Extrait (1997)Adobe Acrobat PDF
Titre : Sourcing native plants to support ecosystem function in different planting contexts Type de document : Imprimé Auteurs : Andrea T. Kramer ; Barbara Crane ; Jeff Downing ; James Lewis Hamrick ; Kayri Havens ; Amy Highland ; Sarah K. Jacobi ; Thomas N. Kaye ; Eric V. Lonsdorf ; Jennifer Ramp Neale ; Ari Novy ; Peter E. Smouse ; Douglas W. Tallamy ; Abigail White ; Jacob Zeldin Année de publication : 2019 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Restauration des écosystèmes
[CBNPMP-Thématique] Variétés localesRésumé : Current guidance on sourcing native plants to support ecosystem function focuses on the high risk of failure when unsuitable material is used in ecological restoration. However, there is growing recognition that risks may be lower and rewards higher at highly disturbed sites isolated from remnant populations, especially when considering support for pollinators, wildlife, and other ecosystem functions. We developed the first decision support tool using expert opinion to assess suitability of different native plant sources, including horticultural cultivars, in two different planting contexts. We assessed the suitability of 761 sources for 72 commonly sold native species in two different planting contexts (small, isolated, highly disturbed sites vs. large, undisturbed sites near remnant populations). Information on genetic and adaptive backgrounds of sources was strikingly lacking, forcing us to exclude one-third of sources from our assessment. While only 3% of cultivars received high suitability scores for use in large, undisturbed sites near remnant populations, 52% received high suitability scores in small, isolated, highly disturbed sites. However, nearly 25% of cultivars had floral or leaf traits that differed from wild plants in ways that may compromise their ability to support pollinators and other wildlife. Forbs and cultivars lacking genetic diversity and source information were most likely to have altered traits. We recommend that native plant breeders and sellers work together to ensure ecosystem function, adaptation, and diversity information is available to consumers, that consumers request this information to drive demand, and that researchers further investigate how context influences risks and benefits of different sources. Lien pérenne : DOI : 10.1111/rec.12931 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=149223
in Restoration ecology > 27 (3) (2019)Kramer, Andrea T., Crane, Barbara, Downing, Jeff, Hamrick, James Lewis, Havens, Kayri, Highland, Amy, Jacobi, Sarah K., Kaye, Thomas N., Lonsdorf, Eric V., Ramp Neale, Jennifer, Novy, Ari, Smouse, Peter E., Tallamy, Douglas W., White, Abigail, Zeldin, Jacob 2019 Sourcing native plants to support ecosystem function in different planting contexts. Restoration ecology, 27(3).Documents numériques
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