Bulletin of the Torrey Botanical Club最新文献_第3页

Understory influence of the invasive Norway maple (Acer platanoides). 入侵挪威枫对林下植被的影响。

Bulletin of the Torrey Botanical Club Pub Date : 1996-07-01 DOI: 10.2307/2996795

P. Wyckoff, S. Webb

{"title":"Understory influence of the invasive Norway maple (Acer platanoides).","authors":"P. Wyckoff, S. Webb","doi":"10.2307/2996795","DOIUrl":"https://doi.org/10.2307/2996795","url":null,"abstract":"WYCKOFF, PETER H. AND SARA L. WEBB (Biology Department, Drew University, Madison NJ 07940). Understory influence of the invasive Norway maple (Acer platanoides). Bull. Torrey Bot. Club 123:197-205. 1996.Norway maple (Acer platanoides) is invasive within a Fagus grandifolia-Acer saccharum-Quercus spp. forest preserve in New Jersey. To assess the community-level consequences of this invasion, we compared understory composition, richness, and structure beneath canopies of invasive Acer platanoides and of native Acer saccharum and Fagus grandifolia. Understory species richness was significantly lower beneath Acer platanoides and highest beneath Fagus grandifolia. Stem densities were high beneath Acer platanoides but consisted primarily of its own seedlings and saplings. When these Acer platanoides stems were removed from the analysis, there was a trend toward lower stem densities beneath the exotic tree compared with the native canopies. Individual shrub and forb species were too patchy for any canopy affinities to demonstrate significance within this small forest preserve, with two exceptions: Epifagus virginiana, a beech (Fagus) root parasite, was less abundant under Acer platanoides than under either Fagus grandifolia or Acer saccharum; and the shrub Lindera benzoin was less abundant under Acer platanoides and Fagus grandifolia than under Acer saccharum. Among tree seedlings, the exotic Acer platanoides far outnumbered all others, beneath its own canopy and also beneath the two native trees. A surprising paucity of Fagus grandifolia reproduction seems unrelated to the biological invasion. Acer saccharum has some prospects for self-replacement judging from sapling distributions but has sparse reproduction under the other canopy species relative to its exotic congener.","PeriodicalId":9453,"journal":{"name":"Bulletin of the Torrey Botanical Club","volume":"123 1","pages":"197-205"},"PeriodicalIF":0.0,"publicationDate":"1996-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2307/2996795","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68411228","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 81

The breeding system of desert milkweed, Asclepias subulata 沙漠马利筋(Asclepias subulata)的繁殖系统

Bulletin of the Torrey Botanical Club Pub Date : 1996-07-01 DOI: 10.2307/2996792

R. Wyatt, C. Ivey, S. Lipow, C. Ivey

引用次数: 14

Icones Pleurothallidium. XII. Systematics of Brachionidium. Addenda to Dresslerella, Platystele and Porroglossum (Orchidaceae). 标志性的Pleurothallidium。XII。Brachionidium的系统分类学。Dresslerella，Platystele和Poroglossum（兰科）的补遗。

Bulletin of the Torrey Botanical Club Pub Date : 1996-07-01 DOI: 10.2307/2996801

K. Barringer, C. Luer

引用次数: 2

A Manual of California Vegetation. 加州植被手册。

Bulletin of the Torrey Botanical Club Pub Date : 1996-07-01 DOI: 10.2307/2996802

A. Greller, J. O. Sawyer, T. Keeler-Wolf

引用次数: 4

Plant Communities of New Jersey: A Study in Landscape Diversity. Revised Edition of Vegetation of New Jersey. 新泽西州植物群落:景观多样性研究。《新泽西植被》修订版。

Bulletin of the Torrey Botanical Club Pub Date : 1996-07-01 DOI: 10.2307/2996803

D. Costich, Beryl Robichaud Collins, Karl H. Anderson

引用次数: 0

Microhabitat requirements and seed/microsite limitation of the rare granite outcrop endemic Amphianthus pusillus (Scrophulariaceae)1 稀有花岗岩特有露头文昌花(Amphianthus pusillus)的微生境要求和种子/微生境限制

Bulletin of the Torrey Botanical Club Pub Date : 1996-07-01 DOI: 10.2307/2996794

J. Hilton, R. Boyd, R. Boyd

{"title":"Microhabitat requirements and seed/microsite limitation of the rare granite outcrop endemic Amphianthus pusillus (Scrophulariaceae)1","authors":"J. Hilton, R. Boyd, R. Boyd","doi":"10.2307/2996794","DOIUrl":"https://doi.org/10.2307/2996794","url":null,"abstract":"amine the roles of seed and microsite limitation in determining the microdistribution of the federally-threatened plant, Amphianthus pusillus. Microhabitat variables such as soil depth, maximum water depth, soil texture, soil nutrient status, and number and fecundity of Diamorpha smallii plants correlated poorly with Amphianthus density and fecundity. Density-fecundity relationships were explored by thinning dense populations of young Amphianthus. Mean capsule production/plant declined at densities greater than 1.4 plants/10 cm2, indicating strong intraspecific competition. Capsule production per plot was constant at densities greater than 7.1 plants/10 cm2. Transplanted A. pusillus were significantly less likely to survive to produce seeds when placed in nonAmphianthus pools compared with plants transplanted into Amphianthus-containing pools, implying that microsite limitation occurred. However, 33% of the plots in non-Amphianthus pools produced capsule-bearing plants, indicating that unoccupied suitable habitat may exist and that the distribution of A. pusillus may also be dispersal-limited.","PeriodicalId":9453,"journal":{"name":"Bulletin of the Torrey Botanical Club","volume":"123 1","pages":"189"},"PeriodicalIF":0.0,"publicationDate":"1996-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2307/2996794","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68411214","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 28

Patterns of leaf tannin variation in chestnut oak (Quercus prinus) and black oak (Quercus velutina) with respect to topography in a southeastern Ohio oak-hickory forest1 俄亥俄州东南部橡山核桃林中板栗栎(Quercus prinus)和黑栎(Quercus velutina)叶片单宁的变化模式与地形的关系

Bulletin of the Torrey Botanical Club Pub Date : 1996-07-01 DOI: 10.2307/2996800

J. Reed, B. Mccarthy, J. Reed, B. Mccarthy

{"title":"Patterns of leaf tannin variation in chestnut oak (Quercus prinus) and black oak (Quercus velutina) with respect to topography in a southeastern Ohio oak-hickory forest1","authors":"J. Reed, B. Mccarthy, J. Reed, B. Mccarthy","doi":"10.2307/2996800","DOIUrl":"https://doi.org/10.2307/2996800","url":null,"abstract":"in low light and high nutrient environments. To test this hypothesis, we evaluated the patterns of leaf tannin chemistry in two species of oak (Quercus velutina L. and Q. prinus L.) utilizing protein precipitation methods. Leaves were sampled from mature, forest-grown, canopy trees found in a southeastern Ohio oak-hickory forest. To evaluate the effects of environment, we sampled along a natural gradient using trees from contrasting northand south-facing slopes. To assess the patterns of variation in tannin abundance among populations, we sampled multiple trees from three different sites. Thus, data were analyzed for patterns of variation with respect to slope aspect and population. Quercus prinus trees growing on south-facing slopes had significantly greater amounts of leaf tannins than those on north-facing slopes but did not exhibit significant population differences in foliar tannin content. In contrast, Q. velutina trees on north- and south-facing slopes did not differ significantly in foliar tannin content but did exhibit significant population differences in foliar tannin content. Different species may have varying responses to the environmental stress associated with topography. Environment may have a considerable effect on leaf tannin content at the landscape scale. However, in some cases, populations may also contribute to variation and need to be considered when evaluating patterns of secondary plant metabolite distribution and/or plant-animal interactions.","PeriodicalId":9453,"journal":{"name":"Bulletin of the Torrey Botanical Club","volume":"123 1","pages":"243"},"PeriodicalIF":0.0,"publicationDate":"1996-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2307/2996800","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68411430","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

The cost of apical dominance in white pine (Pinus strobus L.) : Growth in multi-stemmed versus single-stemmed trees 白松(Pinus strobus L.)顶端优势的代价:多茎与单茎树木的生长

Bulletin of the Torrey Botanical Club Pub Date : 1996-05-01 DOI: 10.2307/2996774

Elizabeth A. Chamberlin, L. Aarssen

{"title":"The cost of apical dominance in white pine (Pinus strobus L.) : Growth in multi-stemmed versus single-stemmed trees","authors":"Elizabeth A. Chamberlin, L. Aarssen","doi":"10.2307/2996774","DOIUrl":"https://doi.org/10.2307/2996774","url":null,"abstract":"CHAMBERLIN, E. A. AND L. W AARSSEN. (Department of Biology, Queen's University, Kingston, ON, Canada K7L 3N6). The cost of apical dominance in white pine (Pinus strobus L.): Growth in multi-stemmed versus single-stemmed trees. Bull. Torrey Bot. Club 123: 268-272. 1996-White pine (Pinus strobus L.) normally has a single main stem extending the full height of the tree. Multi-stemmed trees however are occassionally formed following destruction of the terminal shoot, usually by stem-boring insects, which releases lateral shoots from apical dominance. With resources being channelled into more than one main 'sink,' multi-stemmed trees may be able to display greater photosynthetic surface area. Thus, we tested whether or not multi-stemmed trees had overcompensated for terminal shoot damage. Based on a survey of mature pine forest in eastern Ontario, Canada, multi-stemmed trees of a given age had shorter heights but greater trunk diameters and greater stem volumes than single-stemmed trees. Hence, multi-stemmed trees appear to be capable of overcompensating for terminal shoot damage, suggesting that there is a potential fitness cost of apical dominance (in terms of biomass production).","PeriodicalId":9453,"journal":{"name":"Bulletin of the Torrey Botanical Club","volume":"123 1","pages":"268-272"},"PeriodicalIF":0.0,"publicationDate":"1996-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2307/2996774","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68411005","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 24

Cassini on Compositae II and III. 卡西尼号的合成物II和III。

Bulletin of the Torrey Botanical Club Pub Date : 1996-04-01 DOI: 10.2307/2996074

Ola Karis, R. M. King, Paul C. Janaske, D. Lellinger

引用次数: 0

Vegetation in Eastern North America. 北美东部的植被。

Bulletin of the Torrey Botanical Club Pub Date : 1996-04-01 DOI: 10.2307/2996077

S. Ware, A. Miyawaki, K. Iwatsuki, M. Grandtner

引用次数: 25