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Book digitized by Google from the library of the University of Michigan and uploaded to the Internet Archive by user tpb.

Book digitized by Google from the library of the University of Michigan and uploaded to the Internet Archive by user tpb.

Book digitized by Google from the library of Oxford University and uploaded to the Internet Archive by user tpb.

Book digitized by Google from the library of Oxford University and uploaded to the Internet Archive by user tpb.

Book digitized by Google from the library of Oxford University and uploaded to the Internet Archive by user tpb.

Book digitized by Google from the library of Oxford University and uploaded to the Internet Archive by user tpb.

The work described was carried out in a mixed coniferous woodland in North Wales, the tree species represented being Abies grandis, Larix decidua, Picea sitchensis and Pinus sylvestris. Samples of the Phthiracarid populations were taken at three monthly intervals over a period of 21 months. All species of Phthiracarid mites occurred predominantly in the litter and humus layers. Both Hoploderma magnum and Phthiracarus piger were recorded mainly from the litter, whereas Oribotritia loricata occurred commonly throughout the litter and humus layers. Comparison of these layers with samples cut halfway down each layer to include the interface between two layers has shown that although the numbers for all species of Phthiracarid mites were greater in the second type of sampling, the differences were not significant. All four species of mites had aggregated populations at all seasons of the year. H. magnum, P. piger and O. loricata all showed consistently lower populations under Abies grandis compared with the other three tree species. On some occasions the populations under Picea sitchensis were significantly higher than under the other three tree species. H. spinosum showed no real differences in distribution by tree species. No real seasonal differences were demonstrated for any of the four Phthiracarid species.

The work described was carried out in a mixed coniferous woodland in North Wales, the tree species represented being Abies grandis, Larix decidua, Picea sitchensis and Pinus sylvestris. Samples of the Phthiracarid populations were taken at three monthly intervals over a period of 21 months. All species of Phthiracarid mites occurred predominantly in the litter and humus layers. Both Hoploderma magnum and Phthiracarus piger were recorded mainly from the litter, whereas Oribotritia loricata occurred commonly throughout the litter and humus layers. Comparison of these layers with samples cut halfway down each layer to include the interface between two layers has shown that although the numbers for all species of Phthiracarid mites were greater in the second type of sampling, the differences were not significant. All four species of mites had aggregated populations at all seasons of the year. H. magnum, P. piger and O. loricata all showed consistently lower populations under Abies grandis compared with the other three tree species. On some occasions the populations under Picea sitchensis were significantly higher than under the other three tree species. H. spinosum showed no real differences in distribution by tree species. No real seasonal differences were demonstrated for any of the four Phthiracarid species.

The work described was carried out in a mixed coniferous woodland in North Wales, the tree species represented being Abies grandis, Larix decidua, Picea sitchensis and Pinus sylvestris. Samples of the Phthiracarid populations were taken at three monthly intervals over a period of 21 months. All species of Phthiracarid mites occurred predominantly in the litter and humus layers. Both Hoploderma magnum and Phthiracarus piger were recorded mainly from the litter, whereas Oribotritia loricata occurred commonly throughout the litter and humus layers. Comparison of these layers with samples cut halfway down each layer to include the interface between two layers has shown that although the numbers for all species of Phthiracarid mites were greater in the second type of sampling, the differences were not significant. All four species of mites had aggregated populations at all seasons of the year. H. magnum, P. piger and O. loricata all showed consistently lower populations under Abies grandis compared with the other three tree species. On some occasions the populations under Picea sitchensis were significantly higher than under the other three tree species. H. spinosum showed no real differences in distribution by tree species. No real seasonal differences were demonstrated for any of the four Phthiracarid species.

The work described was carried out in a mixed coniferous woodland in North Wales, the tree species represented being Abies grandis, Larix decidua, Picea sitchensis and Pinus sylvestris. Samples of the Phthiracarid populations were taken at three monthly intervals over a period of 21 months. All species of Phthiracarid mites occurred predominantly in the litter and humus layers. Both Hoploderma magnum and Phthiracarus piger were recorded mainly from the litter, whereas Oribotritia loricata occurred commonly throughout the litter and humus layers. Comparison of these layers with samples cut halfway down each layer to include the interface between two layers has shown that although the numbers for all species of Phthiracarid mites were greater in the second type of sampling, the differences were not significant. All four species of mites had aggregated populations at all seasons of the year. H. magnum, P. piger and O. loricata all showed consistently lower populations under Abies grandis compared with the other three tree species. On some occasions the populations under Picea sitchensis were significantly higher than under the other three tree species. H. spinosum showed no real differences in distribution by tree species. No real seasonal differences were demonstrated for any of the four Phthiracarid species.

The work described was carried out in a mixed coniferous woodland in North Wales, the tree species represented being Abies grandis, Larix decidua, Picea sitchensis and Pinus sylvestris. Samples of the Phthiracarid populations were taken at three monthly intervals over a period of 21 months. All species of Phthiracarid mites occurred predominantly in the litter and humus layers. Both Hoploderma magnum and Phthiracarus piger were recorded mainly from the litter, whereas Oribotritia loricata occurred commonly throughout the litter and humus layers. Comparison of these layers with samples cut halfway down each layer to include the interface between two layers has shown that although the numbers for all species of Phthiracarid mites were greater in the second type of sampling, the differences were not significant. All four species of mites had aggregated populations at all seasons of the year. H. magnum, P. piger and O. loricata all showed consistently lower populations under Abies grandis compared with the other three tree species. On some occasions the populations under Picea sitchensis were significantly higher than under the other three tree species. H. spinosum showed no real differences in distribution by tree species. No real seasonal differences were demonstrated for any of the four Phthiracarid species.

The work described was carried out in a mixed coniferous woodland in North Wales, the tree species represented being Abies grandis, Larix decidua, Picea sitchensis and Pinus sylvestris. Samples of the Phthiracarid populations were taken at three monthly intervals over a period of 21 months. All species of Phthiracarid mites occurred predominantly in the litter and humus layers. Both Hoploderma magnum and Phthiracarus piger were recorded mainly from the litter, whereas Oribotritia loricata occurred commonly throughout the litter and humus layers. Comparison of these layers with samples cut halfway down each layer to include the interface between two layers has shown that although the numbers for all species of Phthiracarid mites were greater in the second type of sampling, the differences were not significant. All four species of mites had aggregated populations at all seasons of the year. H. magnum, P. piger and O. loricata all showed consistently lower populations under Abies grandis compared with the other three tree species. On some occasions the populations under Picea sitchensis were significantly higher than under the other three tree species. H. spinosum showed no real differences in distribution by tree species. No real seasonal differences were demonstrated for any of the four Phthiracarid species.

The work described was carried out in a mixed coniferous woodland in North Wales, the tree species represented being Abies grandis, Larix decidua, Picea sitchensis and Pinus sylvestris. Samples of the Phthiracarid populations were taken at three monthly intervals over a period of 21 months. All species of Phthiracarid mites occurred predominantly in the litter and humus layers. Both Hoploderma magnum and Phthiracarus piger were recorded mainly from the litter, whereas Oribotritia loricata occurred commonly throughout the litter and humus layers. Comparison of these layers with samples cut halfway down each layer to include the interface between two layers has shown that although the numbers for all species of Phthiracarid mites were greater in the second type of sampling, the differences were not significant. All four species of mites had aggregated populations at all seasons of the year. H. magnum, P. piger and O. loricata all showed consistently lower populations under Abies grandis compared with the other three tree species. On some occasions the populations under Picea sitchensis were significantly higher than under the other three tree species. H. spinosum showed no real differences in distribution by tree species. No real seasonal differences were demonstrated for any of the four Phthiracarid species.

The work described was carried out in a mixed coniferous woodland in North Wales, the tree species represented being Abies grandis, Larix decidua, Picea sitchensis and Pinus sylvestris. Samples of the Phthiracarid populations were taken at three monthly intervals over a period of 21 months. All species of Phthiracarid mites occurred predominantly in the litter and humus layers. Both Hoploderma magnum and Phthiracarus piger were recorded mainly from the litter, whereas Oribotritia loricata occurred commonly throughout the litter and humus layers. Comparison of these layers with samples cut halfway down each layer to include the interface between two layers has shown that although the numbers for all species of Phthiracarid mites were greater in the second type of sampling, the differences were not significant. All four species of mites had aggregated populations at all seasons of the year. H. magnum, P. piger and O. loricata all showed consistently lower populations under Abies grandis compared with the other three tree species. On some occasions the populations under Picea sitchensis were significantly higher than under the other three tree species. H. spinosum showed no real differences in distribution by tree species. No real seasonal differences were demonstrated for any of the four Phthiracarid species.

The work described was carried out in a mixed coniferous woodland in North Wales, the tree species represented being Abies grandis, Larix decidua, Picea sitchensis and Pinus sylvestris. Samples of the Phthiracarid populations were taken at three monthly intervals over a period of 21 months. All species of Phthiracarid mites occurred predominantly in the litter and humus layers. Both Hoploderma magnum and Phthiracarus piger were recorded mainly from the litter, whereas Oribotritia loricata occurred commonly throughout the litter and humus layers. Comparison of these layers with samples cut halfway down each layer to include the interface between two layers has shown that although the numbers for all species of Phthiracarid mites were greater in the second type of sampling, the differences were not significant. All four species of mites had aggregated populations at all seasons of the year. H. magnum, P. piger and O. loricata all showed consistently lower populations under Abies grandis compared with the other three tree species. On some occasions the populations under Picea sitchensis were significantly higher than under the other three tree species. H. spinosum showed no real differences in distribution by tree species. No real seasonal differences were demonstrated for any of the four Phthiracarid species.

"New Oribatidæ from the United States" is an article from Proceedings of the Academy of Natural Sciences of Philadelphia, Volume 58 . View more articles from Proceedings of the Academy of Natural Sciences of Philadelphia . View this article on JSTOR . View this article's JSTOR metadata . You may also retrieve all of this items metadata in JSON at the following URL: https://archive.org/metadata/jstor-4063104

"Abbreviations of the titles of literature": p. [vi]-viii

"Abbreviations of the titles of literature": p. [vi]-viii

"Abbreviations of the titles of literature": p. [vi]-viii

Book Source: Digital Library of India Item 2015.499894 dc.contributor.author: Michael, Albert D. dc.date.accessioned: 2015-09-26T01:02:13Z dc.date.available: 2015-09-26T01:02:13Z dc.date.digitalpublicationdate: 2007/02/12 dc.date.citation: 1888/12/01 dc.identifier.barcode: 04990010249085 dc.identifier.origpath: /data4/upload/0101/889 dc.identifier.copyno: 1 dc.identifier.uri: http://www.new.dli.ernet.in/handle/2015/499894 dc.description.scannerno: Asiatic_01 dc.description.scanningcentre: C-DAK, Kolkata dc.description.main: 1 dc.description.tagged: 0 dc.description.totalpages: 462 dc.format.mimetype: application/pdf dc.language.iso: Unknown dc.publisher.digitalrepublisher: Digital Library Of India dc.publisher: The Ray Society, London dc.rights: In Public Domain dc.source.library: The Asiatic Society, Kolkata dc.subject.classification: Natural Sciences dc.subject.classification: Zoology dc.subject.classification: Systematic Zoology dc.title: British Oribatidae Vol. 2 dc.type: Print - Paper dc.type: Book

"Osobne odbicie z T. LXV Spraw. Kom. fizjogr. Polskiej Akademji Umiej". Streszczenie w jęz. niemieckim;24 s. : 23 cm

"Osobne odbicie z T. LXV Spraw. Kom. fizjogr. Polskiej Akademji Umiej". Streszczenie w jęz. niemieckim;24 s. : 23 cm

"Osobne odbicie z T. LXV Spraw. Kom. fizjogr. Polskiej Akademji Umiej". Streszczenie w jęz. niemieckim;24 s. : 23 cm