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  • Linguistics  (4)
  • 1
    Online Resource
    Online Resource
    American Association for the Advancement of Science (AAAS) ; 2009
    In:  Science Vol. 326, No. 5954 ( 2009-11-06), p. 808-809
    In: Science, American Association for the Advancement of Science (AAAS), Vol. 326, No. 5954 ( 2009-11-06), p. 808-809
    Abstract: The evolution of animal pollination in flowering plants (angiosperms) and the resulting coevolution and diversification of both angiosperms and major pollinator groups during the late Cretaceous (99.6 to 65.5 million years ago) is one of the classic stories of evolutionary biology ( 1 ). On page 840 of this issue, however, Ren et al. ( 2 ) challenge aspects of this story and hint at a much more complex ecological scenario for the evolution of plant-pollinator relationships.
    Type of Medium: Online Resource
    ISSN: 0036-8075 , 1095-9203
    RVK:
    RVK:
    Language: English
    Publisher: American Association for the Advancement of Science (AAAS)
    Publication Date: 2009
    detail.hit.zdb_id: 128410-1
    detail.hit.zdb_id: 2066996-3
    detail.hit.zdb_id: 2060783-0
    SSG: 11
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  • 2
    Online Resource
    Online Resource
    American Association for the Advancement of Science (AAAS) ; 2014
    In:  Science Vol. 346, No. 6215 ( 2014-12-12), p. 1360-1362
    In: Science, American Association for the Advancement of Science (AAAS), Vol. 346, No. 6215 ( 2014-12-12), p. 1360-1362
    Abstract: It is increasingly recognized that many pollinator populations are declining. Ollerton et al. looked at British historical distribution records for bees and flower-visiting wasps across the past century. Though it is well known that agricultural intensification after World War II had a negative impact on many species, pollinator declines began in the decades preceding this time, when other changes were made to agricultural practices and policies. Science , this issue p. 1360
    Type of Medium: Online Resource
    ISSN: 0036-8075 , 1095-9203
    RVK:
    RVK:
    Language: English
    Publisher: American Association for the Advancement of Science (AAAS)
    Publication Date: 2014
    detail.hit.zdb_id: 128410-1
    detail.hit.zdb_id: 2066996-3
    detail.hit.zdb_id: 2060783-0
    SSG: 11
    Location Call Number Limitation Availability
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  • 3
    Online Resource
    Online Resource
    American Association for the Advancement of Science (AAAS) ; 2022
    In:  Science Vol. 377, No. 6605 ( 2022-07-29), p. 471-472
    In: Science, American Association for the Advancement of Science (AAAS), Vol. 377, No. 6605 ( 2022-07-29), p. 471-472
    Abstract: The sexual reproduction of seed plants involves the transfer of male gametes—in pollen—to their female gametes. In flowering plants (angiosperms), this is performed with the stigma of flowers, whereas the gymnosperms (such as conifers and cycads) produce a diversity of structures on their reproductive axes to accomplish the same task. This transfer of male gametes is generally known as “pollination” and can be mediated by animals, wind, or water. Animal pollination, principally by insects, is the dominant strategy for angiosperms but also occurs in the extant gymnosperms, as well as some species of mosses. Outside of these plants, no other group of organisms has been demonstrated to interact with animals in this way, until now. On page 528 of this issue, Lavaut et al. ( 1 ) demonstrate that a living species of red seaweed, Gracilaria gracilis , uses the isopod crustacean Idotea balthica to transfer its male gametes, substantially extending the phylogenetic scope of species that use animals as pollinators.
    Type of Medium: Online Resource
    ISSN: 0036-8075 , 1095-9203
    RVK:
    RVK:
    Language: English
    Publisher: American Association for the Advancement of Science (AAAS)
    Publication Date: 2022
    detail.hit.zdb_id: 128410-1
    detail.hit.zdb_id: 2066996-3
    detail.hit.zdb_id: 2060783-0
    SSG: 11
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  • 4
    Online Resource
    Online Resource
    American Association for the Advancement of Science (AAAS) ; 2020
    In:  Science Vol. 368, No. 6497 ( 2020-06-19), p. 1306-1308
    In: Science, American Association for the Advancement of Science (AAAS), Vol. 368, No. 6497 ( 2020-06-19), p. 1306-1308
    Abstract: For more than a century there has been a fascination with the surprisingly rapid rise and early diversity of flowering plants (angiosperms). Darwin described the seemingly explosive diversification of angiosperms as an “abominable mystery,” and debates continue about the origin and processes driving angiosperm speciation. Dating the origin of angiosperms was traditionally the prerogative of paleobotanists who read the fossil record of plants, but with DNA sequencing becoming increasingly sophisticated, molecular dating methods have come to the table. Many angiosperm fossils can be dated to the Early Cretaceous (∼135 million years ago), which has led paleobotanists to reason that they originated during that era. It is now increasingly recognized that angiosperms are probably older than the oldest fossils, but how much older remains controversial. When angiosperms originated is key to understanding the origin and evolution of pollinators, particularly insects such as bees, butterflies, moths, and flies.
    Type of Medium: Online Resource
    ISSN: 0036-8075 , 1095-9203
    RVK:
    RVK:
    Language: English
    Publisher: American Association for the Advancement of Science (AAAS)
    Publication Date: 2020
    detail.hit.zdb_id: 128410-1
    detail.hit.zdb_id: 2066996-3
    detail.hit.zdb_id: 2060783-0
    SSG: 11
    Location Call Number Limitation Availability
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