Population status and ecology of Codonoblepharon forsteri (Dicks.) Goffinet in an ancient woodland in Britain

IF 1.2 3区 生物学 Q3 PLANT SCIENCES Journal of Bryology Pub Date : 2021-10-02 DOI:10.1080/03736687.2021.1985883
D. Callaghan
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引用次数: 3

Abstract

Introduction This study was carried out to investigate the population status and ecology of the moss Codonoblepharon forsteri (Dicks.) Goffinet (syn. Zygodon forsteri (Dicks.) Mitt.) at Burnham Beeches, UK. Methods Population size and abundance were evaluated as the count of host trees and occupied 10 cm grid cells, respectively. All trees known to have been occupied by Codonoblepharon forsteri were surveyed and reasons for losses were selected from a predetermined list. A random sample of veteran pollards were surveyed, in addition to all trees within three woodland compartments. Key results Of the 76 trees previously recorded as having been occupied by Codonoblepharon forsteri, 71 were refound; the moss was present on 33 (46%) of them. The main causes of losses of C. forsteri were competitive exclusion and tree death. The species was found on 11 (19%) of the 59 veteran pollards sampled. It occurred at a mean density of 1.1 trees/ha (range = 0.56–2.1 trees/ha). The data suggested a total population of ca 115 occupied trees, of which about half were veteran pollards. A total of 198 10 cm grid cells were occupied on the 47 host trees found. The moss typically occurred in very small quantity and exclusively on Fagus sylvatica L. By far its most frequent microhabitat was root knotholes, but it also occurred on seepage zones on trunks and trunk deadwood. Conclusions Over the next few decades, the Burnham Beeches population of Codonoblepharon forsteri will decline significantly as the ancient pollards die. If it survives, the many new pollards recently created should be a major long-term benefit.
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英国一片古老林地中的毛叶Codonoplepon forsteri(Dicks.)Goffinet种群现状与生态
摘要本研究调查了山东省青苔(codonoblephon forsteri, Dicks.)的种群现状和生态状况。Goffinet(同语:Zygodon forsteri(迪克斯))米特)在伯纳姆山毛榉,英国。方法以寄主树数和占用10cm网格细胞数分别评价种群大小和丰度。我们调查了所有已知被狐齿蛾占据的树木,并从预先确定的清单中选择了造成损失的原因。除了三个林地区域内的所有树木外,还随机调查了一些资深的pollard。重点结果:在已有记录的76棵树中,重新发现71棵;其中33人(46%)身上有苔藓。竞争排斥和树木死亡是导致福氏梭菌损失的主要原因。在59只取样的老pollard中,有11只(19%)发现该物种。平均密度为1.1株/ha(范围为0.56 ~ 2.1株/ha)。数据显示,被占领的树木总数约为115棵,其中约一半是经验丰富的pollard。在47棵寄主树上共发现198个10 cm的网格细胞。青苔的数量很少,而且只生长在Fagus sylvatica L.上,其最常见的微生境是根节孔,但也生长在树干和树干枯木的渗漏区。结论在未来几十年里,随着古苍鹭的死亡,伯纳姆山毛榉种群数量将显著下降。如果它能存活下来,最近建立的许多新的极地应该是一个重大的长期利益。
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来源期刊
Journal of Bryology
Journal of Bryology 生物-植物科学
CiteScore
4.50
自引率
31.60%
发文量
20
审稿时长
3 months
期刊介绍: Journal of Bryology exists to promote the scientific study of bryophytes (mosses, peat-mosses, liverworts and hornworts) and to foster understanding of the wider aspects of bryology. Journal of Bryology is an international botanical periodical which publishes original research papers in cell biology, anatomy, development, genetics, physiology, chemistry, ecology, paleobotany, evolution, taxonomy, molecular systematics, applied biology, conservation, biomonitoring and biogeography of bryophytes, and also significant new check-lists and descriptive floras of poorly known regions and studies on the role of bryophytes in human affairs, and the lives of notable bryologists.
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