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  • Home
  • About iDigBio and the AR Collection Card Project
  • ARPEO Project
  • PROJECT REPORT 2022
  • Macrofungi: The Daisy Earthstar
    • New England Vascular Plants: The Cardinal Flower
    • Take a Closer Look: Reindeer moss
    • Take a Closer Look: Daisy Earthstars
  • The Consortia of North American Lichens and Bryophytes: Greygreen Reindeer Lichen
    • Keys to the Cabinet: SE Plants: The White-topped Pitcher Plant
  • Invertnet Collection Network: The Thorn Bug
    • Take a Closer Look: Thorn Bug Treehopper
  • Paleoniches: Brachiopods
  • Ammonite
  • iDigBio: Channel Catfish
  • Great Lakes Invasive Network: Zebra mussel
  • Tri-Trophic Thematic Collection Network: Stink Bug Parasitoid
  • Macroalgal: Elk Kelp
  • Insect Fossils: Tsetse Fly
  • SCAN: Earth-boring Scarab Beetle
  • InvertEBase: Carolina Mantis
  • EPICC: Fossil Crab
  • Animal Communication: Ruby-throated Hummingbird
  • Poweshiek Skipperling
  • RINGTAIL
  • Tarantula Hawk
    • Take a Closer Look: at the Tarantula Hawk
  • Sonoran Mantid
  • California Leaf-nosed Bat
    • Take a Closer Look: Bat Wings
  • Pipevine Swallowtail
    • Plants to attract Pipevine Swallowtails
  • Desert Hairy Scorpion
  • Gila Monster
  • Ocotillo
  • California Poppy
  • Anna's hummingbird
    • Plants to attract Hummingbirds
  • Monarch
    • Plants to attract Monarchs
  • Bumblebee
    • Plants to Attract Bumblebees
  • White-nosed coati
  • Asian Long-horned beetle
    • ALB Life Cycle
  • Learning Resources
    • Latitude and Longitude Game
  • Special Thanks
  • Give Us Your Feedback!
  • Contact Us
  • Specimen Cards
  • PRIVACY POLICY
  • TEST page
  • Human Evolution lab
  • Skull 8

elk kelp: Did you know?

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Pelagophycus porra
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Elk kelp, named for its antler-like appearance, grows in subtidal forests off the coasts of southern California and northwestern Baja Peninsula. It is the second largest algae after the aptly named giant kelp. Elk kelp is anchored by a holdfast (similar in structure to roots) in sediment. At the opposite end, a buoyant oval pneumatocyst lifts the stipe (similar to a stem) up into the water. A strong storm can be enough to break the kelp at its stipe, so broken pieces of elk kelp can often be seen washed up on shore. 

Three ecotypes (varieties) of this kelp are recognized. They are thought to be in the early stages of speciation, meaning these ecotypes may branch off into unique and separate species given enough time. Each ecotype prefers a distinct habitat, for example calm rather than turbulent water or rocky rather than soft substrate. However, all elk kelp grows in temperatures of no higher than 60° Fahrenheit. Thus, continued rise in seas temperature could spell a major problem for this majestic macro alga. This is especially important, since elk kelp provides an important habitat for fish, sea cucumbers, and snails.

Because of their important role in aquatic ecosystems, macroalgae like elk kelp are important foci of climate change and biodiversity research. The Macroalgal Herbarium Consortium seeks to provide a data portal through which researchers can access images and important records of macroalgal specimens from 49 North American and Pacific Island herbaria. This database is significant not only to scientists, but also to educators, as it provides a tool for learning about the economic importance and diversity of macroalgae.

Credits:

Project's Library of Life Lead: Chris Neefus
3D Imaging: K. Harrison Holmes and Anne Basham
Page Images: Curtis Clark and D. J. Eernisse

More information: 

Macroalgal Herbarium Consortium
http://macroalgae.org/portal/index.php
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Digitized Pelagophycus porra specimens in biological collections.
​Click the map to explore the iDigBio database.
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