---
attributes: ~
cited_by: []
contributors: []
create_dt: 2013-07-09T16:19:00
description: ~
display_name: ea1073ea-fb24-4aef-9d11-a20c1e07e7f0
figures:
  - attributes: ~
    caption: 'The 36-day-old clams in the photos are a single species, Mercenaria mercenaria, grown in the laboratory under varying levels of carbon dioxide (CO<sub>2</sub>) in the air. CO<sub>2</sub> is absorbed from the air by ocean water, acidifying the water and thus reducing the ability of juvenile clams to grow their shells. As seen in the photos, where CO<sub>2</sub> levels rise progressively from left to right, 36-day-old clams (measured in microns) grown under elevated CO<sub>2</sub> levels are smaller than those grown under lower CO<sub>2</sub> levels. The highest CO<sub>2</sub> level, about 1500 parts per million (ppm; far right), is higher than most projections for the end of this century but could occur locally in some estuaries. (Figure source: Talmage and Gobler 2010<tbib>93174a81-1212-49a4-a2f8-ed8286e05bda</tbib>).'
    chapter_identifier: oceans-marine-resources
    create_dt: 2013-07-09T16:19:00
    identifier: ocean-acidification-reduces-size-of-clams
    lat_max: ~
    lat_min: ~
    lon_max: ~
    lon_min: ~
    ordinal: 3
    report_identifier: nca3
    source_citation: 'Talmage and Gobler 2010<tbib>93174a81-1212-49a4-a2f8-ed8286e05bda</tbib>'
    submission_dt: ~
    time_end: ~
    time_start: ~
    title: Ocean Acidification Reduces Size of Clams
    url: http://nca2014.globalchange.gov/highlights/report-findings/oceans/graphics/ocean-acidification-reduces-size-clams
    usage_limits: Copyright protected. Obtain permission from the original figure source.
files:
  - display_name: oceans_clam_series_v2_390ppm.png
    file: 93/b3/0f84cb7a7f26da387a3069d6e010/oceans_clam_series_v2_390ppm.png
    href: http://data.globalchange.gov/assets/93/b3/0f84cb7a7f26da387a3069d6e010/oceans_clam_series_v2_390ppm.png
    identifier: 0976d362-440a-4c5c-80ce-85b4afab62e6
    landing_page: ~
    location: ~
    mime_type: image/png
    sha1: cf5d53f2aaf29da2a27c1ea5032272aec20326ab
    size: 286073
    thumbnail: 93/b3/0f84cb7a7f26da387a3069d6e010/.thumb-0976d362-440a-4c5c-80ce-85b4afab62e6.png
    thumbnail_href: http://data.globalchange.gov/assets/93/b3/0f84cb7a7f26da387a3069d6e010/.thumb-0976d362-440a-4c5c-80ce-85b4afab62e6.png
    type: file
    uri: /file/0976d362-440a-4c5c-80ce-85b4afab62e6
    url: http://data.globalchange.gov/assets/93/b3/0f84cb7a7f26da387a3069d6e010/oceans_clam_series_v2_390ppm.png
href: http://52.38.26.42:8080/image/ea1073ea-fb24-4aef-9d11-a20c1e07e7f0.yaml
identifier: ea1073ea-fb24-4aef-9d11-a20c1e07e7f0
lat_max: ~
lat_min: ~
lon_max: ~
lon_min: ~
parents: []
position: ~
references: []
submission_dt: ~
time_end: ~
time_start: ~
title: 'Ocean Acidification Causes Clams to Shrink - 390 ppm'
type: image
uri: /image/ea1073ea-fb24-4aef-9d11-a20c1e07e7f0
url: ~
usage_limits: ~