Glime, J. M. and Lissner, J. 2017. Arthropods: Arachnida – Spider Habitats. Chapt. 7-3. In: Glime, J. M. Bryophyte Ecology. Volume 7-3-1 2. Bryological Interaction. Ebook sponsored by Michigan Technological University and the International Association of Bryologists. Last updated 18 July 2020 and available at <http://digitalcommons.mtu.edu/bryophyte-ecology2/>. CHAPTER 7-3 ARTHROPODS: ARACHNIDA – SPIDER HABITATS Janice M. Glime and Jørgen Lissner TABLE OF CONTENTS Habitats ................................................................................................................................................................................... 7-3-2 Forests, Heaths, and Meadows in Denmark ............................................................................................................................ 7-3-4 Forests and Woodlands ........................................................................................................................................................... 7-3-6 Atypidae .......................................................................................................................................................................... 7-3-8 Clubionidae (Sac Spiders) ............................................................................................................................................... 7-3-9 Gnaphosidae (Ground Spiders) ....................................................................................................................................... 7-3-9 Hahniidae (Dwarf Sheet Spiders) .................................................................................................................................... 7-3-9 Linyphiidae ................................................................................................................................................................... 7-3-10 Neotropical and South American Forests .............................................................................................................. 7-3-16 Lycosidae ...................................................................................................................................................................... 7-3-16 Malkaridae .................................................................................................................................................................... 7-3-17 Salticidae ....................................................................................................................................................................... 7-3-17 Theridiidae .................................................................................................................................................................... 7-3-17 Thomisidae .................................................................................................................................................................... 7-3-17 Rock Outcrops .............................................................................................................................................................. 7-3-18 Epiphytic Bryophytes .................................................................................................................................................... 7-3-18 Heath and Heather ................................................................................................................................................................ 7-3-19 Clubionidae ................................................................................................................................................................... 7-3-21 Linyphiidae ................................................................................................................................................................... 7-3-21 Marshes and Moist Meadows................................................................................................................................................ 7-3-24 Linyphiidae ................................................................................................................................................................... 7-3-25 Swampy Places ..................................................................................................................................................................... 7-3-26 Aquatic .............................................................................................................................................................................. 7-3-27 Sand Dunes ........................................................................................................................................................................... 7-3-27 Grasslands and Pastures ........................................................................................................................................................ 7-3-31 Clubionidae ................................................................................................................................................................... 7-3-32 Gnaphosidae .................................................................................................................................................................. 7-3-32 Linyphiidae ................................................................................................................................................................... 7-3-32 Lycosidae ...................................................................................................................................................................... 7-3-33 Thomisidae .................................................................................................................................................................... 7-3-33 Mountains and Altitudinal Relations ..................................................................................................................................... 7-3-33 Araneidae ...................................................................................................................................................................... 7-3-34 Clubionidae ................................................................................................................................................................... 7-3-34 Gnaphosidae .................................................................................................................................................................. 7-3-35 Hahniidae ...................................................................................................................................................................... 7-3-35 Linyphiidae ................................................................................................................................................................... 7-3-35 Lycosidae ...................................................................................................................................................................... 7-3-36 Tundra and Arctic ................................................................................................................................................................. 7-3-37 Clubionidae ................................................................................................................................................................... 7-3-40 Gnaphosidae .................................................................................................................................................................. 7-3-40 Hahniidae ...................................................................................................................................................................... 7-3-41 Linyphiidae ................................................................................................................................................................... 7-3-41 Faroe Islands ......................................................................................................................................................... 7-3-42 Yukon .................................................................................................................................................................... 7-3-43 Lycosidae ...................................................................................................................................................................... 7-3-44 Bryophytes vs Lichens .......................................................................................................................................................... 7-3-45 Casual Users ......................................................................................................................................................................... 7-3-45 Invasive Bryophytes.............................................................................................................................................................. 7-3-49 Known Associates ................................................................................................................................................................. 7-3-49 Summary .............................................................................................................................................................................. 7-3-49 Acknowledgments