Within-crown distribution, attack, and germination of Curculio occidentis-damaged and Cydia latiferreana-damaged Garry oak acorns in Victoria, British Columbia, Canada

2012 ◽  
Vol 144 (3) ◽  
pp. 419-434
Author(s):  
Imre S. Otvos ◽  
Doris A. Mills ◽  
Nicholas Conder
Keyword(s):  
British Columbia ◽  
Plant Species ◽  
Endangered Plant ◽  
Feeding Damage ◽  
Quercus Garryana ◽  
Damage Category ◽  
Rare And Endangered ◽  
Germination Success ◽  
First Time ◽  
Weevil Infestation

AbstractGarry oak, Quercus garryana Douglas ex Hooker (Fagaceae), is part of a unique ecosystem in British Columbia, Canada, which is rich in rare and endangered plant species. Garry oak recruitment is critical to the existence of this ecosystem, therefore, the effect of Curculio occidentis (Casey) (filbert weevil; Coleoptera: Curculionidae) and Cydia latiferreana (Walsingham) (filbertworm; Lepidoptera: Tortricidae) on acorn germination is of great interest. Together these two insects infested 80.7%, 75.1%, and 51.3% of acorns collected in 1996, 1997 (low crop years), and 1998 (high crop year), respectively. Filbertworm infestation did not vary with crown level. Filbert weevil infestation did not vary with crown level during poor crop years, but significantly more filbert weevil-infested acorns were found in the lower than the middle and upper portions of the trees during the high crop year. Severely damaged acorns did not germinate, and acorns with light to moderate feeding damage had lower germination success than undamaged acorns, but growth of germinated seedlings in the light to moderate damage category was unaffected. This study showed, for the first time, that these two insect species infested a large proportion of Garry oak acorns on the tree in British Columbia, and that light to moderate damage of the acorn has relatively low impact on seedling growth.

scholarly journals Insect Visitation to Wildflowers in the Endangered Garry Oak, Quercus garryana, Ecosystem of British Columbia

2005 ◽  
Vol 119 (2) ◽  
pp. 245 ◽  
Author(s):  
A. L. Parachnowitsch ◽  
E. Elle
Keyword(s):  
British Columbia ◽  
Plant Species ◽  
Quercus Garryana ◽  
Chi Squared ◽  
Insect Visitation ◽  
Introduced Honeybee ◽  
Pollinating Insects ◽  
Basic Biology ◽  
Oak Ecosystem ◽  
Plant Pollinator

The Garry Oak Ecosystem (GOE) is a fragmented and endangered ecosystem in Canada, and is currently the focus of conservation and restoration efforts in British Columbia. However, little is known about the basic biology of GOE forbs, or their relationships with pollinating insects. We monitored wildflowers and their insect visitors in 25 quadrats within a 25 × 25 metre plot, located in a fragment of the GOE near Duncan, British Columbia, for six weeks (the majority of the flowering period). Overall, 21 native and non-native forb species flowered in our quadrats during the survey, and we observed an additional six forb species flowering outside of our quadrats. Eight forbs were visited within quadrats by a total of 13 insect taxa, identified to morphospecies. Visits by eight additional morphospecies were observed outside of the quadrats. In general, visitation was low; however, most insect morphospecies were observed visiting more than one plant species, and most plant species were visited by more than one insect morphospecies, suggesting that pollination may be generalised in this community. A Chi-squared analysis indicated that insect visitation was not proportional to the relative abundance of forbs, with higher than expected visitation to Common camas (Camassia quamash), and no observed visits to 11 species, most with very small (putatively unattractive) flowers. The most frequent insect visitor was the introduced Honeybee, Apis mellifera, followed by native mason bees (Osmia spp.) and mining bees (Andrena spp.). Our observations provide baseline data for future, detailed studies that should investigate the importance of plant-pollinator mutualisms for sustainability of populations and communities in this rare ecosystem.

scholarly journals Recovery of Globba wengeri (C.E.C. Fisch.) K.J. Williams, critically endangered plant species from Serchhip District in Mizoram, Northeast India

2020 ◽  
Vol 7 (2) ◽  
pp. 178-181
Author(s):  
Lalnun Mawia ◽  
Vanlalhruaii Ralte ◽  
H. Lalruatsanga ◽  
Zothan Mawia ◽  
P.C. Vanlalhluna ◽  
...  
Keyword(s):  
Life History ◽  
Plant Species ◽  
Natural Habitat ◽  
Northeast India ◽  
Critically Endangered ◽  
Endangered Plant ◽  
Endangered Plant Species ◽  
The Family ◽  
First Time

Globba wengeri (C.E.C. Fisch.) K.J. Williams, former state flower of Mizoram, a rare and critically endangered plant species, commonly known as ‘dancing girl’, belonging to the family Zingiberaceae, is reported in this communication for the first time from Serchhip District in Mizoram at an elevation of about 1187 m a.s.l. It was found on moist, watery and rocky slopes. The plant is under severe threat in the natural habitat and therefore, further studies are required to determine life history and particular survival threats of this species.

scholarly journals Recent Development in Micropropagation Techniques for Rare Plant Species

Plants ◽  
2020 ◽  
Vol 9 (12) ◽  
pp. 1733
Author(s):  
Vasiliy A. Chokheli ◽  
Pavel A. Dmitriev ◽  
Vishnu D. Rajput ◽  
Semyon D. Bakulin ◽  
Anatoly S. Azarov ◽  
...  
Keyword(s):  
Plant Species ◽  
Russian Federation ◽  
Biological Diversity ◽  
Rare Plant ◽  
Endangered Plant ◽  
Current Investigation ◽  
Future Prospects ◽  
Rare And Endangered ◽  
The Russian Federation ◽  
Global And Local

The current investigation aimed to present an overview of the conservation of biological diversity of rare and endangered plant species. Methods of biodiversity conservation as well as several overview recommendations for the preservation of various rare species have been considered. An overview of the taxa included in the red book has been presented on the example of the Russian Federation. Global and local codes and classifiers of plant rarity were also presented. Future prospects for the conservation of biological diversity and the creation and development of bioresource collections have been considered.

scholarly journals Recent record of a threatened holoparasitic plant Sapria himalayana Griff. in Mehao Wildlife Sanctuary, Arunachal Pradesh, India

2020 ◽  
Vol 12 (10) ◽  
pp. 16399-16401
Author(s):  
Arif Ahmad ◽  
Amit Kumar ◽  
Gopal Singh Rawat ◽  
G.V. Gopi
Keyword(s):  
Plant Species ◽  
Host Plants ◽  
Threat Assessment ◽  
Camera Trapping ◽  
Endangered Plant ◽  
Limited Information ◽  
Arunachal Pradesh ◽  
Ecological Studies ◽  
Wildlife Sanctuary ◽  
Rare And Endangered

In this note, we report the opportunistic observation of Sapria himalayana a rare and endangered plant species in Mehao Wildlife Sanctuary during our camera trapping for mammals. We recorded the plant in two locations inside the sanctuary. We found three flowers near Mehao lake and five flowers near Sally lake. Considering the restricted distribution and limited information available on Sapria himalayana it is suggested that further ecological studies to document their host plants, population and threat assessment will aid in their conservation.  

scholarly journals Rare and endangered plant species of the Chinese Altai Mountains

2010 ◽  
Vol 2 (3) ◽  
pp. 222-230
Author(s):  
OLONOVA Marina V. ◽  
ZHANG DaoYuan ◽  
DUAN ShiMing ◽  
YIN LinKe ◽  
PAN BoRong
Keyword(s):  
Plant Species ◽  
Endangered Plant ◽  
Altai Mountains ◽  
Endangered Plant Species ◽  
Rare And Endangered

scholarly journals Damp beech forests on calcareous tufas in the Parsęta River basin (Western Pomerania)

2010 ◽  
Vol 19 (1) ◽  
pp. 81-86 ◽  
Author(s):  
Zbigniew Osadowski
Keyword(s):  
River Basin ◽  
Plant Species ◽  
Calcareous Soil ◽  
Endangered Plant ◽  
Beech Forests ◽  
Unique Type ◽  
Endangered Plant Species ◽  
Rare And Endangered

Damp beech forests on calcareous tufas in the Parsęta River basin (Western Pomerania)Damp beech forests in the Parsęta River basin (Western Pomerania) constitute a rare and unique type of beechwood community in post-glacial landscape of the Pomerania region. They grow on calcareous soil of pararendzina type formed from calcareous tufas and are characterized by the presence of two orchidsCephalanthera rubraandNeottia nidus-avisaccompanied by many rare and endangered plant species occurring in habitats rich in calcium.

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