Rainfall as an Abiotic Factor at Race Rocks

Rainfall  at Race Rocks. Recorded by a Davis Instruments tipping bucket rain gauge. These graphs are made possible by the website victoriaweather.ca

Hourly Rainfall today at Race Rocks

 

 

Rainfall for the past week at Race Rocks

 

 

Rainfall for the past month

Rainfall for 2020 at Race Rocks

 

 

Rainfall graph for 2019

Rainfall graph for 2018

Rainfall graph for 2017

 

ARCHIVES
2016 Rainfall for 2016
NOTE MISSING DATA in 2016 due to equipment failure
2015: Monthly Totals are shown. ( Includes data and graphs at this site.) 2014: Monthly Totals are shown. ( Includes data and graphs at this site.) 2013: Monthly Totals are shown. ( Includes data and graphs at this site.) 2012: Monthly Totals are shown. ( Includes data and graphs at this site.) 2011: Monthly Totals are shown. ( Includes data and graphs at this site.) 2010: Monthly Totals are shown. ( Includes data and graphs at this site.) 2009: Monthly Totals are shown. ( Includes data and graphs at this site.) Note : Jan to July.. equip failure. 2008: Monthly Totals are shown. ( Includes data and graphs at this site.) equipment failure gives blank records for several days 2007: Monthly Totals are shown. ( Includes data and graphs at this site.) Equip failure February March and part of April of 2007 2006: Monthly Rain Totals (includes data and graphs for part of 2006:  

Extreme values since 2006

 

 

 

The Adaptations and Response of Organisms to the Abiotic factor of Rainfall

Canada geese are dependant on the availability of fresh water at Race Rocks. During the winter, the higher level rock pools are refreshed by rainfall. There is no other natural source of water on the island. By the time their eggs hatch in June, most of the pools have dried up, so they have to take their young off the island and over to the mainland. They may make it past the eagles….(Photo by PB)

Juvenile bald eagles in very wet weather.( Photo by Pam Birley)
The availability of water for vegetation on Race Rocks has major implications for the species of plants which can survive on the island. Not only do they have to survive dessication from salt spray, but abundant water in the winter months and almost a total lack of water from June to September. One of the best grasses to tolerate these conditions is Fescue. Here you can see it growing on the natural rock outcrops on the island. 


Go to this exercise on the Water Cycle , along with other biogeochemical cycles.

Other references:  Google Climate change and Rainfall patterns

Global warming already changing rainfall... 

Wetland Conservation – Threatened by Climate Change


Rainbow West of Great Race Rocks from the remote camera 5. Image by Garry Fletcher,

Recent Posts

Sea Otter Facts and Facility Work

Today was a cloudy and drizzly day but I managed to get a good chunk of work done, all while hanging out with Ollie the sea otter. I think that’s one of the things that makes this place so special is that you can be scrubbing bird poop off solar panels in the rain and look down and see this fuzzy little otter staring up at you. I’ve spent a lot of time working on and around the ocean and never have I experienced wildlife like this.

Since Ollie has been around so much lately I figured I’d make this post a sea otter specific one (since you might find that more interesting than hearing about the fire hoses I rolled).

Sea otters are a keystone species, meaning that other species within the ecosystem largely depend on them and without sea otters there would be drastic changes to those ecosystems. Sea otters predate on sea urchins who graze one kelp. The sea otter’s urchin heavy diet keeps the kelp forests from being decimated by urchins, and as a result kelp forests flourish in the presence of sea otters.

A new otter (not Ollie) with a large red urchin.

 

Ollie wrapped up in the kelp he helps protect

Urchin’s aren’t the only thing sea otters eat, you’ll also find them munching on clams, crabs, mussels, and other marine invertebrates. Adult sea otters need to eat a quarter of their weight in food a day. To put that into perspective – if you weigh 150 pounds, you’d have to eat almost 40 pounds of food PER DAY!

Picking out his next snack

Sea otters do not have blubber like other marine mammals do, instead they have the densest fur of any mammal, with up to one million hairs per square inch! If they aren’t busy eating, then they are busy grooming. That much fur takes a lot of upkeep and is their only source of insulation. The constant grooming traps air and heat next to the skin, preventing the skin from getting wet and keeping them warm in the process.

Ollie grooming his hind flippers

Ollie, Race Rock’s resident sea otter, is one of few sea otters seen this far south in BC. He is easily recognized by his light blonde head and by the pink scar on his nose. He’s adored by many, and any day I encounter him I consider to be a great day!

Now onto the less adorable items…

Facility Work:

  • Filled cistern, fresh water flushed the pump, rolled and stored fire hoses
  • Cleaned solar panels
  • Cleaned windows of both houses
  • Chopped firewood
  • Ran an equalization charge of the batteries
  • Mopped basement floor

Vessel Traffic:

  • 1 ecotourism vessel
  • 3 private vessels

Infractions:

  • 1 rental boat fishing within the reserve despite multiple communication attempts. Informed the local marina and reported to DFO

Weather:

    • Sky: Overcast, on/off rain
    • Wind: High of 4 knots, Low of 19 knots
    • Sea: Calm
    • Temperature: Low 9, High  11oC

** All wildlife photos taken at the furthest distance possible, and may be cropped to improve detail! **

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